Sunday's coordinated strikes on a Saudi refinery and Yemeni port city mark a dangerous escalation, as a fragile truce collapses and regional powers align with global rivals. Main Developments At least 11 people were killed in Houthi attacks on Mokha, a port city held by Yemen's internationally recognized government, according to a medical source. Three civilians and eight military personnel died, with 32 others wounded—six of them civilians—all from strikes on the port. Two military sources confirmed at least eight troops killed and over 40 injured in multiple missile and drone barrages. The Houthis also targeted pro-government forces and installations outside Mokha, plus sites on islands near the Bab al-Mandab Strait, a critical shipping chokepoint. Read also: Germany faces daily hybrid warfare, minister says after drone find Earlier, the Houthis struck an oil facility on Saudi Arabia's Red Sea coast, operated by state-owned Aramco. The Saudi energy ministry said it extinguished a fire at the Jazan site, while Houthi military spokesman Yahya Saree claimed the attack was retaliation for Saudi drone incursions into northwest Yemen. Background The attacks come as a UN-backed 2022 truce in Yemen's civil war appears to have collapsed last month, following renewed fighting between the Houthis and Saudi-backed government forces. The breakdown paralleled Iran's blockade of the Strait of Hormuz, with the Houthis announcing their own maritime blockade of Saudi Arabia, targeting tankers and oil infrastructure in the Red Sea. Mokha, held by the Aden-based government, has been a flashpoint, with Houthi forces using missiles and drones to challenge Saudi influence. The strikes signal a coordinated effort to disrupt both military and economic targets, linking the Yemeni conflict to broader US-Iran tensions. Why It Matters The escalation threatens global oil supplies and shipping routes, as the Red Sea and Bab al-Mandab Strait are vital for international trade. The collapse of the truce could reignite a devastating conflict that has already caused a humanitarian crisis, while the Houthi-Saudi confrontation mirrors the wider regional rivalry between Iran and US-aligned states. Civilian casualties in Mokha highlight the human cost, with ports like Mokha essential for aid delivery. The strikes also demonstrate how local conflicts can be leveraged as part of larger geopolitical strategies, potentially drawing in more regional and international actors. What's Next Further Houthi attacks on Saudi infrastructure are likely, as the group has vowed to continue its blockade. The internationally recognized government may seek increased Saudi military support, while the UN could attempt to revive peace talks, though the current climate suggests limited prospects. Watch for responses from Saudi Arabia and its allies, which may escalate airstrikes on Houthi-held areas. The status of the Bab al-Mandab Strait remains a key concern for global shipping, with any further disruption likely to impact oil prices and international trade.