← WW3 RISK TRACKER / THEATER: Yemen War & Houthi Attacks
Saudi – Houthis conflict
- Saudi air defense forces intercepted two Houthi drones targeting the Riyadh region. https://saudigazette.com.sa · 26 Sep 2026Saudi Arabia intercepts Houthi drones, ballistic missile targeting Riyadh, Khamis MushaitAnadolu Ajansı Güncel Haberler · 26 Sep 2026Saudi Arabia downs 2 Houthi drones targeting Riyadh region
- Yemeni Presidential Leadership Council President Rashad al-Alimi called for general mobilization against Ansar Allah forces. © Houthi Military Media via Reuters · 25 Sep 2026Yemen's president calls on his people to mobilise against Iran-backed Houthis
- Yemeni government forces struck Houthi military positions in Taiz province. Anadolu Ajansı Güncel Haberler · 26 Sep 2026Yemeni forces strike Houthi positions, supply lines in Taiz
- Defense chiefs from Saudi Arabia, Pakistan, and Turkey met in Riyadh regarding the Makkah Joint Defense Agreement. https://saudigazette.com.sa · 26 Sep 2026Minister of Defense, Pakistan's Defense Chief discuss Houthi attacks on Makkah, Saudi facilitieshttps://saudigazette.com.sa · 25 Sep 2026Saudi Arabia, Pakistan and Türkiye reaffirm collective defense under Makkah agreement
- Yemeni military officials warned that Houthi cruise missiles in Hodeidah threaten commercial aircraft over the Red Sea. Anadolu Ajansı Güncel Haberler · 26 Sep 2026Yemeni army says Houthi weapons threaten civilian aviation in southern Red Sea
Cross-Border Strike Operations
Ansar Allah sustained long-range pressure against Saudi Arabia by targeting Riyadh and Khamis Mushait with ballistic missiles and drones, testing Saudi air defenses without causing verified infrastructure destruction. https://saudigazette.com.sa · 26 Sep 2026Saudi Arabia intercepts Houthi drones, ballistic missile targeting Riyadh, Khamis MushaitAnadolu Ajansı Güncel Haberler · 26 Sep 2026Gulf Cooperation Council condemns Houthi missile, drone attacks on Saudi ArabiaAnadolu Ajansı Güncel Haberler · 26 Sep 2026Saudi Arabia downs 2 Houthi drones targeting Riyadh region
Anti-Houthi Force Mobilization
Presidential Leadership Council head Rashad al-Alimi issued a nationwide call to arms and offered amnesty for defectors in an effort to stabilize anti-Houthi lines following recent territorial losses near Mokha. https://saudigazette.com.sa · 26 Sep 2026Saudi Joint Forces commander, Tareq Saleh discuss Yemen military readiness© Houthi Military Media via Reuters · 25 Sep 2026Yemen's president calls on his people to mobilise against Iran-backed Houthis
Trilateral Defense Coordination
Military leadership from Saudi Arabia, Pakistan, and Turkey convened in Riyadh to operationalize mutual assistance under the Makkah Joint Defense Agreement against threats to Saudi civilian and energy infrastructure. https://saudigazette.com.sa · 26 Sep 2026Minister of Defense, Pakistan's Defense Chief discuss Houthi attacks on Makkah, Saudi facilitieshttps://saudigazette.com.sa · 25 Sep 2026Saudi Arabia, Pakistan and Türkiye reaffirm collective defense under Makkah agreement
Red Sea Airway Threats
Yemeni military assessments reported Ansar Allah deployed converted air-defense weapons as cruise missiles in Hodeidah province, expanding risks to international commercial aviation routes across the southern Red Sea. Anadolu Ajansı Güncel Haberler · 26 Sep 2026Yemeni army says Houthi weapons threaten civilian aviation in southern Red Sea
Assessment
The theater remains in a high-war posture as Houthi cross-border strikes and coalition mobilization increase the risk of expanded regional military operations.
ISW assesses that upcoming force movements will likely create vulnerabilities for Saudi interdiction. Furthermore, ISW projects Iranian-aligned Iraqi militias will maintain access to their weaponry, as groups like Kataib Sayyid al Shuhada calculate that proposed disarmament agreements will fail. Institute for the Study of War · 2 Oct 2026Iran Update October 2 2026
- Next 7 days
- ISW assesses that operational movements required to reposition militia forces will likely present targets for Saudi interdiction strikes.
- Next month
- ISW anticipates Iranian-backed Iraqi militia factions will successfully retain access to weapons despite disarmament proposals.
WATCH October 2026 — Anticipated militia force movements presenting potential targets for coalition and Saudi interdiction.
- 2026-09-25
France committed troops and air defense systems to protect Saudi Arabia's Yanbu oil terminal.
French President Emmanuel Macron announced the dispatch of military personnel, radar units, and air defense systems to secure the Red Sea oil port of Yanbu. The deployment follows repeated Ansar Allah missile and drone salvos targeting western Saudi energy facilities.
- 2026-09-22
United Kingdom approved RAF air-to-air refueling support for Saudi Arabia against Houthi attacks.
British Prime Minister Andy Burnham authorized Royal Air Force Voyager tanker aircraft to provide air-to-air refueling for Saudi Arabian fighter jets. The time-limited deployment follows a formal request from Saudi Arabia to defend its territory and energy infrastructure.
- 2026-09-20
Ansar Allah targeted Riyadh and Yanbu with ballistic missiles and drones.
Saudi air defenses intercepted a ballistic missile over Riyadh, while a fuel tank near King Khalid International Airport caught fire following reported drone impacts. Additional strikes targeted Aramco energy facilities in Yanbu and several southern Saudi regions.
4 more
- 2026-09-19
Saudi Arabia activated emergency air raid alerts across seven regions, including Riyadh.
Saudi Civil Defense activated national early warning platforms in Riyadh, Jeddah, Taif, and five other regions following Houthi aerial attacks, while falling drone debris caused the first strike fatality in the Kingdom since recent hostilities resumed.
- 2026-09-18
Ansar Allah forces shoot down Saudi F-15 over Marib
Verified video confirmed that Ansar Allah forces downed a Saudi Arabian F-15 fighter jet over Marib governorate.
- 2026-09-17
Intercepted Houthi drone debris kills civilian in Saudi Arabia's Taif governorate
Falling debris from an intercepted Ansar Allah drone killed a Yemeni resident and injured two civilians in Taif governorate.
- 2026-09-12
Drones launched from Iraq struck Saudi Arabia's East-West oil pipeline, forcing its operational shutdown.
Unmanned aerial vehicles originating from Iraq's Maysan province hit Saudi Arabia's East-West pipeline in the Riyadh and Madinah regions, causing injuries and infrastructure damage. Saudi authorities suspended pipeline operations as a precaution while deferring military retaliation.
COMMON QUESTIONS
Is there a war in Yemen?
Not a declared war between states. The armed confrontation is between the Houthi movement and the Saudi-led coalition and the Yemeni government, and it reaches shipping in the Red Sea and the Bab al-Mandab strait. Fighting has continued through repeated truces without a settlement. Legally a non-international armed conflict — the Houthis against Yemen's government — internationalized by Saudi and Emirati involvement. The index reads 74.6/100 as of 1 January 1970 (full-scale war); above 50 it grades the fighting itself rather than the risk of it.
How dangerous is the Saudi and Houthis situation right now?
The index reads 74.6/100 — full-scale war. The scale is anchored on 22 historical episodes from 1914 to 2005, so the number means the same thing from one theater to the next. It is a measurement of what is reported, not a forecast.
How is the Saudi and Houthis risk index calculated?
By fixed formula from open-source reporting: events are extracted and graded by how well evidenced they are, scored across weighted factors, and the model never picks the number. How the index works, and what it does not measure, is explained at wwiii.report/methodology.
How often is this updated?
Every day. The report is rebuilt from that day's reporting and the index re-judged from it, and a fall is published only once the evidence confirms it.
Timeline events — hover the chart to read them
Timeline events — hover the chart to read them
Timeline events — hover the chart to read them
One 0–100 scale for the whole conflict. 0–49 is escalation before war; 50–100 is active war and how far it has gone.
50 is not a threshold the number can cross on its own. Which side a theater sits on is decided by whether verified belligerents are fighting there, so war onset always moves the score up across 50 — the number never declares a war by climbing.
It is a stage, not a probability: 42 is not a 42% chance of war. Below 50 it grades movement toward war, above 50 the war itself.
Why it moved, under the chart, names what changed in the latest move: the day’s readings — strikes, casualties, talks — and, when the conflict’s stage was re-judged, what was graded differently and the events behind it. Open it for the detail.
Re-judged from open reporting by fixed formula — the model never picks a number — and a fall publishes only once the evidence confirms it. A dot on the line is a day the stage itself moved. How it is made →
Direction — which way the week pushed. Severity — where the index sits. Connections — how much of the rest a shock here reaches. Cascade — that reach combined with how ready this theater is to go off.
The index reads the state of the conflict, not the volume of news. Each run grades the factors listed below against fixed rubrics, and the score follows by formula.
So a dramatic headline moves nothing unless it changes a grade. A theater already graded for recurring incursions absorbs one more without moving — it is priced in.
Open How this was measured for every grade, its movement since the last run, and the events behind it. Full construction →
A different measurement from the score above, from a different source. This line counts how much of the world's news reports conflict between these two states, against their own long-run normal: 100 is normal, 200 is twice the usual level.
It is computed mechanically from the GDELT Project's open event stream every 15 minutes and never touches the assessed index above — when both move together, that agreement is the signal. A day with too few events shows no reading rather than a guess. Click the chart for the full history.
Data: the GDELT Project.