EXECUTIVE SUMMARY | INTELLIGENCE WINDOW: 18 September 2026 – 22 September 2026
- No Iranian ballistic missile or drone attack against a regional state has been reported since 8-9 September, the longest such interval since attacks resumed on 28 August.
- President Trump stated on 20 September that Iran faced a choice between reaching an agreement, continued economic deterioration, or destruction.
- Iran’s Khatam al-Anbiya Central Headquarters claimed on 20 September to have intelligence indicating that the US, supported by regional states, was preparing renewed large-scale military operations. Iran has vowed wider retaliation against US and regional targets in response.
- The United Nations General Assembly (UNGA) is scheduled to convene in New York on 22 September. President Trump has stated he is willing to meet Iranian President Masoud Pezeshkian during the UNGA and is also expected to meet with leaders from the Gulf Cooperation Council (GCC).
- High-intensity fighting has continued in Yemen, with the Houthis consolidating recently seized positions and intensifying offensive operations towards Marib. Following sustained Saudi air support for opposing forces, the Houthis have conducted an attack in Riyadh, the first confirmed Houthi attack on the capital during the current escalation.
- Iran has sustained its attacks on vessels attempting to enter or exit the Strait of Hormuz (SoH). However, US military sources have stated that the SoH is now clear of mines and that energy exports have risen to their highest level since the conflict began.
- As of 22 September, the airspaces of Jordan, Saudi Arabia, Kuwait, Bahrain, Qatar, the UAE, and Oman are open. However, Jazan, Abha, and Najran airports in southern Saudi Arabia have recently been regularly closed due to the Houthi threat.











