Houthi territorial advances in early September 2026, including the capture of Mokha port and Perim Island at the Bab al-Mandab Strait, have heightened the risk of successful strikes on commercial vessels, particularly Saudi-linked tankers, elevating war-risk insurance premiums and driving freight-rate spikes. These developments follow documented attacks such as the August 24 ballistic missile strike on the Saudi Amzan tanker and earlier hits on vessels like the Tihamah, contributing to a contraction in weekly Red Sea transits from 1.5 million metric tons earlier in the year. Brent crude prices have hovered above $100 per barrel amid rerouting pressures and Saudi pipeline disruptions, while Egypt faces ongoing Suez Canal revenue shortfalls. Traders are monitoring potential further escalation around the strait, which handles roughly 10-15% of global oil and container traffic, alongside any diplomatic or military responses that could alter targeting dynamics.