Recent Houthi territorial gains in Yemen, including the September 2026 capture of Mokha port, Perim Island, and Hanish Islands in the Bab al-Mandab Strait, have heightened risks to Red Sea shipping lanes already strained by a July 2026 blockade targeting Saudi-linked vessels. This follows documented strikes on commercial ships, such as the Amzan tanker in August, pushing Brent crude above $100 per barrel amid supply rerouting pressures. War-risk insurance premiums have surged to around 1% of hull value from prior levels near 0.3%, adding as much as $8 per barrel in costs for some voyages and driving freight rate spikes of 37% on key China-Saudi routes. Traders are pricing elevated near-term resolution probabilities in related prediction markets, reflecting ongoing kinetic activity and potential further disruptions to global oil flows and Suez Canal volumes. Key near-term catalysts include additional territorial moves or responses from Saudi and international forces.