Military activity linked to the U.S.-Iran war is spreading across several older regional fault lines. Houthi forces say they attacked Saudi energy sites, Saudi and U.S. aircraft struck militias in Iraq, and unexplained drones set gas vessels ablaze at an Egyptian port. Iran-backed Houthi forces declared a blockade against Saudi Arabia and threatened traffic through Bab el-Mandeb and the Red Sea route to the Suez Canal.
The Houthis also claimed attacks near Saudi Arabia’s East-West oil pipeline, which has carried exports away from the constrained Strait of Hormuz route. Maritime security firm Ambrey recorded more than 10 vessels turning back in the Red Sea and Gulf of Aden after the blockade announcement. Iran’s regional network includes armed groups in Yemen, Iraq and Lebanon that retain their own commands and local objectives.
Ambrey data cited by AP showed Bab el-Mandeb transits down 30% since July 21 compared with June. Saudi Arabia blamed Iran-backed Iraqi militias for drone attacks on oil facilities, and U.S. and Saudi aircraft struck militia sites in Iraq. Iraq is trying to balance relationships with Washington and Tehran while U.S. forces prepare to complete a scheduled withdrawal from most of the country.
A drone attack set two gas vessels on fire at Egypt’s Damietta port; no group had claimed responsibility and the Houthis denied involvement. A June truce between Israel and Lebanon has largely held, but the disarmament of Hezbollah and an Israeli withdrawal remain unresolved.
The evidentiary boundary at publication is specific: The party responsible for the Damietta attack is unknown, Houthi and militia claims have not all been independently verified, and the degree of Iranian direction varies by group and incident. The current account therefore distinguishes completed events from announced, proposed or still-contested steps. Statements by governments, companies, litigants and advocacy organizations establish what those parties said; they are not treated as independent proof of every underlying assertion. Numerical values describe the source period and category identified in the reporting and may be revised by the responsible institution.
The next public records expected to update this account are shipping data through Bab el-Mandeb and the Suez route and official attribution for the Damietta fires and any new Saudi or Iraqi response. Until those records appear, the dates, totals, procedural posture and attributed descriptions above are the latest checked account for the July 31 edition. A later filing, official release, verified field report or corrected dataset could change a total or timetable without erasing the documented sequence at this cutoff.