The escalation monitor
World War III 75% loaded
7 levels crossed in Iran, plus 0.3 for 1 level above it already armed, × 10, plus 2 for breadth (2 theatres at exchange of fire or worse)
This is not a probability and not a forecast. It is a measurement of how far the world has already moved along a defined ten-level scale, built only from events that have happened and are sourced. It can go down, and it has.
5 theatres. Worst is 7 of 10.
Regional war at full intensity, with a capital struck and the chokepoint blockaded
Three levels remain above the present position, and all three ask the same question: how close are the great powers to fighting each other rather than through clients. The precondition for the first is already in place. Russia and China are committed to Iran’s side diplomatically and vetoed the United States at the Security Council on 17 September.
IranMiddle East
7/10
Regional war at full intensity. 3 levels above, 1 days at this one.
Russia and NATOEurope
4/10
Exchange of fire. 6 levels above, 5 days at this one.
Korean PeninsulaAsia
3/10
Territorial violation. 7 levels above, 36 days at this one.
China and TaiwanAsia
3/10
Territorial violation. 7 levels above, 317 days at this one.
India and PakistanAsia
3/10
Territorial violation. 7 levels above, 498 days at this one. Peaked at 4 in April 2025.
2 days
Iran and the United States in the same city
The UN General Assembly opens. Iran’s president and foreign minister have US visas; President Trump meets the six Gulf Cooperation Council leaders and says he is close to a decision on whether to resume major attacks.
IranMiddle East7/10
How close is the Iran war to the worst case?
Regional war at full intensity, with a capital struck and the chokepoint blockaded
Three levels remain above the present position, and all three ask the same question: how close are the great powers to fighting each other rather than through clients. The precondition for the first is already in place. Russia and China are committed to Iran’s side diplomatically and vetoed the United States at the Security Council on 17 September.
At level 7: deepening since 19 Sep 2026
Two new categories of target inside eight days: Riyadh and the Aramco facilities at Yanbu struck on 19 September, after alerts across Jeddah, Taif, Khamis Mushait and Al Ula on the 18th. The blockade and the Bab el-Mandeb front are unchanged.
Weapons of mass destruction none used measured separately from the scale
An active war is being fought across a country containing a working power reactor and three bombed nuclear sites. More than 9,000 kilograms of enriched uranium are recorded as inaccessible at Natanz, Fordow and Isfahan, and no inspector has seen any of it for over a year. The IAEA has had no continuity of knowledge over Iran’s fissile material for more than a year, including the stock enriched to 60 per cent. Whether that material survived, was moved, or was destroyed is not established by any inspection. On 27 September the UN panel that monitors nuclear sanctions loses its mandate, leaving no multilateral body positioned to detect diversion.
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Level 10 of 10.World War III
Two nuclear-armed great powers in direct combat with each other. Their own forces, not proxies.
Trips when Whether great-power forces have fired on each other.
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Level 9 of 10.Great-power forces in direct confrontation
Great-power forces face each other directly here: blockade, interception, encirclement, or a mutual-defence clause invoked and answered. No fire exchanged between them.
Trips when Whether those forces are in contact with each other rather than with local belligerents.
Just Security, citing The New York Times and Reuters; Security Council Report
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Level 8 of 10.Great powers on opposing sides
A second nuclear-armed great power commits its own combat forces to this war, on the opposing side to one already engaged.
Trips when Which great powers have their own combat forces in this theatre, and on which side.
Already true Both powers are already committed diplomatically. Russia and China vetoed the US resolution renewing UN nuclear-sanctions monitoring on 17 September, and both reject the legal validity of the sanctions entirely. China is the principal buyer of Iranian crude and has been asking Tehran privately to restrain the Houthis, which is the only demonstrated leverage anyone holds in this theatre.
Just Security, citing The New York Times and Reuters; Security Council Report
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Level 7 of 10.Regional war at full intensity Iran is here
Further states are drawn in as targets or belligerents, capitals come under repeated attack, and the chokepoint is broken rather than slowed.
The war is in its 203rd day and has outgrown its original parties. Houthi missiles and drones struck Riyadh and Aramco facilities at Yanbu on 19 September, the first time the Saudi capital has been targeted since the escalation, and Saudi civil defence issued alerts over Jeddah, Taif, Khamis Mushait and Al Ula the day before. The Houthis have opened a second front at the Bab el-Mandeb. The Strait of Hormuz is under US naval blockade and passing roughly a quarter of its pre-war volume, with 103 commercial vessels redirected and Brent near $104.
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Level 6 of 10.Global chokepoint degraded
A waterway or corridor the world economy depends on stops working normally.
The Strait of Hormuz is passing roughly a quarter of its pre-war oil-product volume. 103 commercial vessels have been redirected, a US naval blockade is in force, and the Houthis have opened a second front at the Bab el-Mandeb. Brent is near $104.
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Level 5 of 10.Third countries struck
States not party to the original fight have their territory attacked.
Iranian drone and missile attacks have hit Gulf states including Kuwait, Bahrain, the UAE and Saudi Arabia. Saudi civil defence issued alerts over Jeddah, Taif, Khamis Mushait and Al Ula as recently as 18 September.
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Level 4 of 10.Sustained state-on-state war
Open warfare between states continuing for months, with a leadership decapitation.
The United States and Israel attacked Iran and killed Supreme Leader Ali Khamenei. The war is in its 203rd day. A UN mission has since found reasonable grounds to believe two strikes that day were the war crime of indiscriminate attack.
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Level 3 of 10.Direct strikes, time-limited
One state strikes another’s territory openly, then stops.
The Twelve-Day War. Israeli and US strikes on Iran, including on nuclear sites, ending in a ceasefire on 24 June 2025. The IAEA dates its loss of continuity of knowledge over Iran’s enriched uranium to these attacks.
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Level 2 of 10.Covert action and proxy war
Sabotage, assassination, or fighting conducted through non-state armed groups.
Iran’s support for non-state armed groups across the region, and its regional actions, are among the grounds cited against it at the Security Council.
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Level 1 of 10.Rhetoric and sanctions
Economic coercion and diplomatic rupture, without violence between states.
France, Germany and the United Kingdom triggered the JCPOA snapback mechanism to reinstate UN sanctions.
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Every time Iran has moved
- to 7 Rescored against the re-spaced scale on 19 September. The war meets the new level seven: Riyadh struck for the first time since the escalation, the Bab el-Mandeb opened as a second front, and Hormuz under blockade at roughly a quarter of pre-war volume.
- to 6 Ceasefire collapses over attacks on shipping; Hormuz degrades again.
- to 4 Islamabad memorandum signed; blockades lifted, strait reopening.
- to 5 Iranian strikes hit Kuwait, the UAE and other Gulf states.
- to 4 The United States and Israel attack Iran and kill the supreme leader.
- to 2 Ceasefire. Fighting stops; sanctions and proxy friction continue.
- to 3 Israeli and US strikes on Iran open the Twelve-Day War.
Russia and NATOEurope4/10
How close is NATO to shooting at Russia for real?
NATO is now routinely shooting Russian drones out of allied skies
Three levels below Iran, and rising faster than Iran ever did. Romania alone logged 23 airspace violations in the first eight months of 2026, against 18 in the whole of 2022 to 2025. What is still missing, and it is the only thing that matters, is a death.
At level 4: deepening since 15 Sep 2026
A NATO aircraft shot down an armed Russian drone over allied territory on 15 September, the first time the alliance has destroyed a weapon-carrying drone in its own airspace in this confrontation. Airspace violations and undersea infrastructure incidents continue to rise.
Weapons of mass destruction none used measured separately from the scale
Russia holds the largest nuclear arsenal in the world and has repeatedly tied it to NATO involvement in Ukraine. Three of the states that would be committed by Article 5 are nuclear powers.
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Level 10 of 10.World War III
Two nuclear-armed great powers in direct combat with each other. Their own forces, not proxies.
Trips when Whether great-power forces have fired on each other.
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Level 9 of 10.Great-power forces in direct confrontation
Great-power forces face each other directly here: blockade, interception, encirclement, or a mutual-defence clause invoked and answered. No fire exchanged between them.
Trips when Whether those forces are in contact with each other rather than with local belligerents.
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Level 8 of 10.Great powers on opposing sides
A second nuclear-armed great power commits its own combat forces to this war, on the opposing side to one already engaged.
Trips when Which great powers have their own combat forces in this theatre, and on which side.
Already true Article 4, the consultation clause one step below it, has already been invoked over this exact issue. It has been used only eight times in the alliance’s history. NATO’s Military Committee chairman said in December that the alliance was weighing a “more aggressive” response to Russian airspace violations, sabotage and cyber attack.
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Level 7 of 10.Regional war at full intensity
Fighting between Russia and NATO members reaching each other’s cities and infrastructure, with a sea or air corridor closed to civil traffic.
Trips when Repeated strikes on NATO or Russian territory beyond border incidents, or closure of the Baltic to civil shipping.
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Level 6 of 10.Spillover
Uninvolved states drawn in, or a system the world depends on breaks.
Trips when Baltic Sea closure, severing of the undersea cable and pipeline network at scale, or neutral states brought into the fighting.
Already true The Baltic cable and pipeline network has already been failing repeatedly since 2022, which is what NATO frigates, aircraft and naval drones were deployed to protect.
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Level 5 of 10.Sustained armed conflict
Open warfare between Russia and a NATO member, continuing for weeks.
Trips when A NATO member and Russia exchanging fire repeatedly and deliberately over weeks, rather than a drone downed here and a cable cut there.
Already true Every component already exists except intent. NATO fighters are engaging Russian hardware in allied airspace as routine air policing, violations are rising steeply, and a Russian presidential aide said in February 2026 that Russia would deploy its navy if Baltic states kept detaining its vessels. Sweden has detained three Russian ships, Germany two tankers and Finland one in the last three months.
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Level 4 of 10.Exchange of fire Russia and NATO is here
NATO forces fire on Russian assets, or Russian forces on NATO assets, without deaths.
An Italian fighter jet flying for NATO shot down a suspected Russian drone carrying an explosive device near Pratkūnai in central Lithuania on 15 September 2026, after it crossed from Belarus. It was the first shootdown in Lithuanian airspace. Romanian F-16s and a Spanish F-18 have downed four Russian drones over Romania, which has flown at least 42 air-policing missions this year, more than all of 2022. A Russian ship fired flares at a Danish helicopter days earlier. Russian officials did not comment.
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Level 3 of 10.Territorial violation
Russian aircraft, drones or weapons cross into NATO territory.
Around 23 Russian drones entered Polish airspace on 9 and 10 September 2025, of which about four were shot down. Poland invoked Article 4 of the North Atlantic Treaty, only the eighth time it has been used since 1949, and NATO launched Operation Eastern Sentry along the whole eastern flank on 12 September 2025. Violations have since accelerated: Romania recorded 23 in the first eight months of 2026 against 18 in the previous four years combined, and found drones or fragments on its territory 27 times in 2026 against 16 in 2025.
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Level 2 of 10.Covert and hybrid
Sabotage, arson, cyber attack or covert action against alliance members.
Germany, Denmark, the United Kingdom and Poland have accused Russia of drone incursions, sabotage, arson and surveillance of defence facilities. An undersea telecoms cable between Lithuania and Latvia was damaged on 2 January 2026, one of a run of Baltic cable and pipeline failures since 2022. One tally counts at least 151 reported Russian operations in Europe between February 2022 and March 2026.
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Level 1 of 10.Coercion
Sanctions, diplomatic rupture and open threat, without violence between states.
Sanctions and rupture have been in place since the full-scale invasion of Ukraine. NATO Secretary-General Mark Rutte now describes Russia’s conduct toward the alliance as “reckless behaviour” that is “a danger to us all”.
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Every time Russia and NATO has moved
- to 4 A NATO jet shoots down a suspected Russian drone over Lithuania, the first in Lithuanian airspace.
- to 3 Around 23 Russian drones enter Polish airspace. Poland invokes Article 4; NATO launches Operation Eastern Sentry.
- to 2 Full-scale invasion of Ukraine; sanctions, rupture and the start of the hybrid campaign in Europe.
Korean PeninsulaAsia3/10
How close are the two Koreas to shooting at each other again?
Near-daily armed contact at the border, and nobody has fired back yet
North Korean troops crossed the Military Demarcation Line more than 20 times in August alone, against 17 in the whole of 2025. South Korea has answered most of them with live warning shots. The North has not returned fire once this year and there have been no casualties, which is the only reason this theatre is not a level higher.
At level 3: steady since 15 Aug 2026
No event has been recorded at this level since the position was last set.
Weapons of mass destruction none used measured separately from the scale
North Korea has not tested a weapon since September 2017, but it has the material and the tunnel. SIPRI estimated roughly 60 assembled warheads in mid-2026, up about a fifth on the year, with fissile material for as many as 90; President Trump referred in August to 57. The IAEA reported to its Board on 28 August 2026 that a new enrichment building at Yongbyon could hold up to 28 centrifuge cascades and that an expanded annex at Kangson is operating. Rafael Grossi called the expansion of weapons-grade production “a cause for serious concern”. Assessments hold that a seventh test awaits a political decision rather than preparation.
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Level 10 of 10.World War III
Two nuclear-armed great powers in direct combat with each other. Their own forces, not proxies.
Trips when Whether great-power forces have fired on each other.
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Level 9 of 10.Great-power forces in direct confrontation
Great-power forces face each other directly here: blockade, interception, encirclement, or a mutual-defence clause invoked and answered. No fire exchanged between them.
Trips when Whether those forces are in contact with each other rather than with local belligerents.
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Level 8 of 10.Great powers on opposing sides
A second nuclear-armed great power commits its own combat forces to this war, on the opposing side to one already engaged.
Trips when Which great powers have their own combat forces in this theatre, and on which side.
Already true A mutual-defence clause binding this theatre’s principal actor has already been invoked and answered — but on the Ukraine axis, not here. Kim Jong Un used Article 4 of the June 2024 treaty with Russia to justify the Kursk deployment, and Pyongyang confirmed through state media in April 2025 that its forces took part. The US–South Korea treaty has not been invoked. Meanwhile the alliance is being loosened from Washington: President Trump ordered Ulchi Freedom Shield cut from eleven days to five in August 2026 and an amphibious exercise cancelled, with Seoul saying it had no advance notice.
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Level 7 of 10.Regional war at full intensity
Repeated fire reaching Seoul or Japanese territory, with regional shipping and air corridors closed.
Trips when Artillery or missile fire falling repeatedly on Seoul, or a strike on Japanese territory.
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Level 6 of 10.Spillover
Uninvolved states attacked from the peninsula, or a system the world depends on breaks.
Trips when An attack reaching a third country, or civil aviation or shipping in the region ceasing to function.
Already true Two systems are being degraded rather than broken. Civil aviation has absorbed sustained GPS jamming that the International Civil Aviation Organization has found unlawful, though none was detected near the maritime border in the first half of 2026. Separately, North Korean theft accounted for a reported 76 per cent of all cryptocurrency hacked by value in the first four months of 2026.
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Level 5 of 10.Sustained armed conflict
Open warfare between the two Koreas, or between North Korea and the United States, continuing for weeks.
Trips when Repeated deliberate exchanges over weeks rather than a crossing answered by warning shots.
Already true North Korea is already a co-belligerent in a sustained interstate war, but not in this theatre. It has fought in Kursk under Article 4 of its 2024 treaty with Russia. South Korea’s intelligence service put roughly 11,000 troops there at the start of 2026; Ukrainian military intelligence claims about 25,000 cumulatively including a 400-strong drone unit, and President Zelenskyy said in August that a decision had been taken to deploy 30,000 to 50,000, without explaining how he knew. Those are competing claims from parties to that war, not established figures, and none of it is happening here. What it establishes is that this army is now combat-experienced.
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Level 4 of 10.Exchange of fire
The two sides shoot at each other’s personnel or assets. Few or no deaths.
Trips when A North Korean unit returning fire during one of the fortification crossings, a shot that wounds or kills, or a Northern Limit Line incident involving an armed vessel rather than a merchant ship.
Already true Everything except the second trigger-pull is already in place. South Korean troops first fired live warning shots in mid-August 2026 and have fired them repeatedly since, at a contested line where armed contact is now near-daily, under standing rules of engagement that require it. The North has not fired back once in 2026 and there have been no casualties. The last genuine two-way exchange was 24 October 2022, when South Korean warning shots at a vessel crossing the Northern Limit Line were answered within ninety minutes by coastal artillery. Seoul is publicly split on whether to soften the warning-shot rule: a newspaper reported an instruction to review it and the Joint Chiefs denied easing anything on 9 September.
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Level 3 of 10.Territorial violation Korean Peninsula is here
Troops, aircraft or weapons cross the demarcation line, without an exchange of fire.
North Korean troops crossed the Military Demarcation Line more than 20 times in August 2026, exceeding the 17 crossings recorded in all of 2025, and near-daily on the eastern front. South Korea’s Joint Chiefs attribute them to border-fortification work reaching ground not previously worked, and have answered most with warning shots. The North is hardening the line into a real border: land clearance is roughly 90 per cent complete and fencing and mining 30 to 60 per cent, projected to finish in 2028. Missile tests have continued — 13 ballistic launch events in 2026, most recently several short-range missiles from Wonsan on 12 September — but every one fell in international water.
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Level 2 of 10.Covert and hybrid
Cyber operations, sabotage, jamming or covert infiltration against the other side or its allies.
The hot vector is money and code rather than the border. The FBI said in July 2026 it had identified a North Korean remote IT worker employed inside a United States federal agency. The International Civil Aviation Organization has formally found that North Korean and Russian GPS jamming breaches the 1944 Chicago Convention. Two inter-Korean vectors have gone quiet: the loudspeakers came down in 2025 and no trash-balloon campaign has been recorded since 2024.
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Level 1 of 10.Coercion
Sanctions, diplomatic rupture and open threat, without violence between states.
North Korea has written the South into its constitution as a hostile state and deleted unification language. Kim Jong Un told the Supreme People’s Assembly in March 2026 that nuclear status is irreversible. The IAEA General Conference adopted a resolution on 17 September 2026 reaffirming that the North cannot hold nuclear-weapon-state status under the Non-Proliferation Treaty; Kim Yo Jong rejected it two days later, saying the country would “never mortgage our sovereignty and right to security”.
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Every time Korean Peninsula has moved
- to 3 North Korean troops begin crossing the Military Demarcation Line during border fortification work; the South fires its first live warning shots of 2026.
- to 1 North Korea constitutionally defines the South as a hostile state and deletes unification language.
China and TaiwanAsia3/10
How close is the Taiwan Strait to a shot being fired?
Daily incursions, no shot fired, and no American carrier in the Pacific
Chinese aircraft crossed the Taiwan Strait median line 24 times in a single day this week, days before Xi Jinping’s first White House visit in more than a decade. Nobody has fired. If this theatre crosses the next level it will most likely happen by accident, as a coast guard boarding that meets a Taiwanese vessel ordered to refuse it.
At level 3: steady since 7 Nov 2025
No event has been recorded at this level since the position was last set.
Weapons of mass destruction none used measured separately from the scale
China and the United States are both nuclear-armed, and China is expanding its arsenal. Nothing in the current Taiwan dispute points at nuclear use.
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Level 10 of 10.World War III
Two nuclear-armed great powers in direct combat with each other. Their own forces, not proxies.
Trips when Whether great-power forces have fired on each other.
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Level 9 of 10.Great-power forces in direct confrontation
Great-power forces face each other directly here: blockade, interception, encirclement, or a mutual-defence clause invoked and answered. No fire exchanged between them.
Trips when Whether those forces are in contact with each other rather than with local belligerents.
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Level 8 of 10.Great powers on opposing sides
A second nuclear-armed great power commits its own combat forces to this war, on the opposing side to one already engaged.
Trips when Which great powers have their own combat forces in this theatre, and on which side.
Already true Japan has publicly stated the condition under which it would act: the prime minister told the Diet in November 2025 that an attack on Taiwan could be a survival-threatening situation permitting collective self-defence, and said in January 2026 that the alliance with Washington would collapse if Tokyo did nothing were American forces attacked during an evacuation. That is a stated condition, not an invocation. American policy remains strategic ambiguity, and Xi Jinping arrives at the White House on 24 September for his first visit in over a decade.
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Level 7 of 10.Regional war at full intensity
Fighting spreading beyond the strait to other regional territory, with cities under repeated attack and first island chain shipping halted.
Trips when Strikes on Japanese, Philippine or other regional territory, or a blockade that stops rather than delays shipping through the first island chain.
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Level 6 of 10.Spillover
Uninvolved states attacked over Taiwan, or a system the world depends on breaks.
Trips when Closure of the Taiwan Strait to commercial traffic, or an attack reaching a third country.
Already true It has already been rehearsed once. The January 2026 militia array held position for more than thirty hours and forced commercial ships to divert. The strait is one of the busiest shipping corridors in the world, and the disruption was temporary rather than structural, but it demonstrated that a fishing fleet can interrupt it without a shot.
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Level 5 of 10.Sustained armed conflict
Open warfare between China and Taiwan, or China and the United States, continuing for weeks.
Trips when An invasion, a declared blockade, or sustained exchanges following a level-four incident.
Already true Nothing currently indicates intent. United States intelligence assessed in March 2026 that Chinese leaders have no plan to invade in 2027 and no fixed timeline. What exists instead is preparation: a revised National Defense Mobilization Law effective 1 October 2026 expanding requisition of civilian assets, and exercises rehearsing the blockade of ports rather than an assault.
Taiwan Ministry of National Defense, daily report; CSIS ChinaPower
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Level 4 of 10.Exchange of fire
Chinese, Taiwanese, Japanese or American state forces shoot at each other’s assets. Few or no deaths.
Trips when Most likely a Chinese coast guard boarding attempt meeting Taiwan’s standing order to refuse it, a Taiwanese shoot-down of a Chinese drone over Kinmen, or an air-to-air incident following a radar lock. Least likely as a deliberate military decision.
Already true The components are assembled. Chinese carrier-based fighters locked fire-control radar on Japanese F-15s in December 2025 and did not answer the hotline during the incident. Chinese state forces have already injured Philippine personnel in the adjacent South China Sea, striking a sailor with a baton in July 2026 and using water cannon on consecutive days. Taiwan’s coast guard told commercial masters in July 2026 to refuse Chinese boarding demands and said its own vessels would physically interpose, telling Beijing “in our waters, China has no jurisdiction” — a collision doctrine with no referee. And since 17 August 2026 there has been no American aircraft carrier in the Western Pacific.
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Level 3 of 10.Territorial violation China and Taiwan is here
Chinese aircraft or vessels cross the median line or enter Taiwan’s restricted waters, without an exchange of fire.
The median line stopped functioning as a constraint during the exercises that followed the 2022 Pelosi visit, and has not recovered. On 17 and 18 September 2026 Taiwan recorded 28 sorties of which 24 crossed it, the highest in a week, alongside seven naval vessels and two government ships. A Chinese military drone flew off Taitung between midnight and 6am on 18 September to watch a Taiwanese live-fire exercise. Chinese coast guard cutters entered Kinmen’s restricted waters repeatedly in August, and have been operating within 32 nautical miles of Taiwan’s east coast since June, demanding port and navigation information from passing ships by radio.
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Taiwan Ministry of National Defense, daily report; Taipei Times; Jamestown Foundation; People's Daily, Chinese state media
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Level 2 of 10.Covert and hybrid
Cable cutting, cyber operations, maritime militia or covert action against Taiwan.
Taiwan’s National Security Bureau logged 960,620,609 attempted intrusions against critical infrastructure in 2025, an average of 2.63 million a day, with attacks on energy infrastructure up tenfold. A Chinese vessel damaged the Taiwan–Matsu No. 3 undersea cable in March 2026; Taiwan’s coast guard boarded it and questioned all eleven crew. In January 2026 between 1,400 and 2,000 Chinese fishing vessels held an L-shaped formation northeast of Taiwan for more than thirty hours, diverting cargo traffic; Taiwan’s watchlist of Chinese ships went from about 300 to about 1,900 afterwards.
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Level 1 of 10.Coercion
Economic and diplomatic coercion of Taiwan or its partners, without violence between states.
The current cycle dates from Japanese Prime Minister Sanae Takaichi telling the Diet that a Chinese attack on Taiwan could permit collective self-defence. What followed was a textbook coercion sequence against Japan: a Chinese consul general writing that Beijing had “no choice but to cut off that dirty neck”, a seafood import halt, rare-earth export restrictions, exports of terbium and dysprosium oxide to Japan reaching zero by June 2026, and deposits of up to 99.2 per cent required on some chemical imports in September 2026. Chinese tourist arrivals to Japan fell 60.7 per cent year on year by January 2026.
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Every time China and Taiwan has moved
- to 3 Japan’s prime minister ties a Taiwan attack to collective self-defence; China opens a sustained economic coercion campaign against Tokyo.
- to 3 Exercises following the Pelosi visit end the Taiwan Strait median line as a practical constraint.
India and PakistanAsia3/10
How close are two nuclear states with no back channel to doing it again?
This theatre has come down. It reached level 4 in April 2025 and sits at 3 now.
Quiet, and the quiet is the most fragile thing on this page
These two fought a four-day war sixteen months ago and have not exchanged fire since. What they also have not done is talk. The water treaty is dead, India is openly defying the court that upheld it, there is no navy-to-navy hotline, and India’s declared doctrine treats any mass-casualty attack on its soil as an act of war. Four days ago their warships collided.
At level 3: steady since 10 May 2025
No event has been recorded at this level since the position was last set.
Weapons of mass destruction none used measured separately from the scale
Both are nuclear-armed and one of them does not rule out going first. SIPRI estimated about 190 Indian warheads and about 170 Pakistani warheads as of January 2026. India maintains a declared no-first-use policy; Pakistan does not, and its posture includes battlefield systems. Pakistan’s joint chiefs chairman said the May 2025 fighting lowered the nuclear threshold, and Indian strikes in that conflict hit airbases assessed to have nuclear missions — which is the single most escalation-relevant fact in this file.
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Level 10 of 10.World War III
Two nuclear-armed great powers in direct combat with each other. Their own forces, not proxies.
Trips when Whether great-power forces have fired on each other.
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Level 9 of 10.Great-power forces in direct confrontation
Great-power forces face each other directly here: blockade, interception, encirclement, or a mutual-defence clause invoked and answered. No fire exchanged between them.
Trips when Whether those forces are in contact with each other rather than with local belligerents.
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Level 8 of 10.Great powers on opposing sides
A second nuclear-armed great power commits its own combat forces to this war, on the opposing side to one already engaged.
Trips when Which great powers have their own combat forces in this theatre, and on which side.
Already true A mutual-defence clause covering Pakistan now exists and has not been invoked. Turkey, Saudi Arabia and Pakistan signed an agreement in Mecca on 7 August 2026 under which an armed attack on any of the three would be regarded as an attack on all. India is not named in it, and analysts disagree about whether it amounts to collective defence or closer coordination. Separately, SIPRI treats the possible extension of Pakistan’s nuclear deterrent to Saudi Arabia as an open question, noting that Pakistan’s own defence minister has been recorded on both sides of it.
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Level 7 of 10.Regional war at full intensity
Fighting extending well beyond Kashmir, with sustained strikes on major population centres on both sides.
Trips when Sustained strikes on cities on both sides, rather than exchanges along the Line of Control.
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Level 6 of 10.Spillover
Uninvolved states attacked, or a system the world depends on breaks.
Trips when The dispute drawing in third states, or closure of regional airspace or sea lanes at scale.
Already true The mutual airspace bans are a real and continuing disruption, forcing longer and costlier routings across South Asia, but they are regional rather than systemic.
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Level 5 of 10.Sustained armed conflict
Open warfare between the two states, continuing for weeks or months.
Trips when A mass-casualty attack in India attributed to Pakistan is the dominant trigger in every serious assessment of this theatre. Second is India beginning physical works to store or divert the western rivers, which Pakistan has designated an act of war.
Already true It has already happened once, briefly. Between 7 and 10 May 2025 the two states fought openly: Indian strikes on nine sites, Pakistani retaliation, drone and missile exchanges, and Indian strikes on Pakistani airbases assessed to have nuclear missions. SIPRI calls it their most significant armed conflict in decades. Crisis Group puts the toll at about 70 and notes it was the first time either struck deep into the other since both became nuclear-armed. It lasted four days, not weeks, so it does not meet this level’s criterion — but it is the reason this theatre is not comparable to a border that has simply been quiet. Pakistan draws roughly 80 per cent of its water from the rivers India is withholding, and its army chief has threatened to destroy any dam.
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Level 4 of 10.Exchange of fire
The two sides shoot at each other’s personnel or assets. Few or no deaths.
Trips when A resumption of firing across the Line of Control, or a naval encounter that goes kinetic. The 15 September collision is the precedent that matters: there is no navy-to-navy hotline and no equivalent of the 1972 incidents-at-sea agreement.
Already true Crossed once already, on 24 April 2025, and dormant since May 2025. No verifiable firing across the Line of Control was found anywhere in 2026. The collision four days ago did not re-cross this level: the ships touched hulls, no weapons were used, nobody was hurt, and an analyst noted that no chaff was fired, the conventional escalatory signal. What makes the dormancy fragile is doctrine rather than deployment. India’s declared position since May 2025 treats any act of terror as an act of war and draws no distinction between militants and their state sponsors, and the prime minister described Operation Sindoor as paused rather than finished. Pakistan’s declared response posture is quid pro quo plus.
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Level 3 of 10.Territorial violation India and Pakistan is here
Forces, aircraft or vessels cross into the other’s territory or claimed waters, without an exchange of fire.
Cleanly crossed by Operation Sindoor in May 2025, when Indian missiles and aircraft struck into Pakistan proper. The current instance is contested and weaker: on 15 September 2026 the Indian destroyer INS Kolkata and the Pakistani frigate PNS Hunain collided in the North Arabian Sea during a Pakistani exercise. India says it was in international waters and that the Pakistani ship made a dangerous overtaking manoeuvre; Pakistan says the Indian ship had been probing its exclusive economic zone since 7 September and called the action “highly provocative and unacceptable”. Both invoke the same 1991 agreement against the other. Neither has released video or track data. An exclusive economic zone is not sovereign territory, so Pakistan’s framing does not by itself establish a violation.
Crossed
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Level 2 of 10.Covert and hybrid
Covert action, militancy sponsorship or targeted killing, alleged by either side.
Both states accuse the other and both deny it. India’s home minister announced more than 200 arrests across 14 states in August 2026, describing a network funded by Pakistan’s Inter-Services Intelligence; Pakistan rejected this and counter-accused India of targeted assassinations abroad. Neither allegation is publicly proven. This is the most heavily propagandised level in this theatre and should be read as two states making claims about each other, not as established fact.
Crossed
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Level 1 of 10.Coercion
Economic and diplomatic rupture between the two states, without violence.
Within 48 hours of the Pahalgam attack that killed 26 people in April 2025, India put the Indus Waters Treaty in abeyance, closed the land crossing, revoked Pakistani visas and cut its High Commission staff from 55 to 30. All of it is still in force. The Permanent Court of Arbitration ruled on 1 September 2026 that the treaty “remains fully in force” and that India must observe it; India rejected the ruling within hours as illegally constituted. Pakistan has extended its airspace ban on Indian aircraft to 24 October 2026, the seventeenth such extension.
Crossed
Every time India and Pakistan has moved
- to 3 Ceasefire ends four days of open fighting. Forces pull back from forward positions and the hotline between operations directorates stays open.
- to 4 Small-arms exchanges begin across the Line of Control.
- to 1 After the Pahalgam attack India suspends the Indus Waters Treaty, closes the border and revokes visas.
How the percentage is calculated
Published so you can recompute it, and so we cannot quietly tune it.
- 73 from severity — the worst theatre (Iran) has crossed 7 of 10 levels, worth ten points each.
- 2 from breadth — two points for each theatre beyond the first that is at exchange of fire or worse. 2 of 5 qualify.
- Breadth is capped so it can never imply a level nobody has crossed. It adds to the reading and never subtracts, because a quiet theatre being added should not make the world look safer.
- 100% means 100% means World War III has begun: two nuclear-armed great powers in direct combat with each other, their own forces rather than proxies. That is what this site is named for and it is the top of this scale. It is deliberately NOT the end of the world. The First and Second World Wars were vast and the world went on afterwards. Weapons of mass destruction are measured separately, because a warhead could be used in a regional war without a world war starting, and a world war could be fought without one. Stacking them made nuclear use look like one step from wherever we already stood, which was both frightening and false. We would rather the number never be interesting.
This is not a probability and not a forecast. It is a measurement of how far the world has already moved along a defined ten-level scale, built only from events that have happened and are sourced. It can go down, and it has.
Which theatres are counted
A theatre is tracked if escalation there could plausibly draw nuclear-armed great powers into direct conflict with each other. That is the question this site exists to answer. Catastrophic wars that do not carry that risk — Sudan and the Sahel among them — are not on this scale. Their absence is a statement about great-power escalation, not about their human cost.
The shared scale
Every theatre is scored against these ten levels. The events look nothing alike from one theatre to another; severity is what is being compared.
- 1CoercionSanctions, rupture and threat. No violence between states.
- 2Covert and hybridSabotage, assassination, cyber, or fighting through proxies.
- 3Territorial violationForces or weapons cross a border. No exchange of fire.
- 4Exchange of fireState forces shoot at each other's assets. Few or no deaths.
- 5Sustained armed conflictOpen warfare between states, continuing for weeks or months.
- 6SpilloverUninvolved states attacked, or a system the world depends on breaks.
- 7Regional war at full intensityThe war outgrows its original parties: further states are attacked or join the fighting, capitals or major population centres come under repeated attack, and a system the world depends on is broken rather than strained.
- 8Great powers on opposing sidesA second nuclear-armed great power commits its own combat forces to a war where another already has them. They are now on opposite sides of the same fight, with forces present, and are not yet shooting at each other.
- 9Great-power forces in direct confrontationThose forces face each other directly: blockade, interception, encirclement, or a mutual-defence clause invoked and answered. No fire has yet been exchanged between the great powers themselves.
- 10World War IIITwo nuclear-armed great powers in direct combat with each other. Not proxies, not clients, not deniable forces: their own. By the definition this site uses, that is the start of a third world war, and it is the top of this scale.
How a level is decided
A level is marked crossed only when its criterion has actually been met and we can link the evidence. Levels above the current position carry two things: what would trip them, and any precondition already in place. The build refuses to publish a level without sources, and refuses to let a theatre's current level disagree with its own crossing dates.
This describes where things stand, not where they are going. We assign no probabilities to the levels above, because we have no honest basis for one. Theatres can move down as well as up, and every movement is dated above. How we verify sets out the rest.