Yemen’s Houthi rebels have declared a naval blockade against Saudi Arabia, marking a significant escalation in regional hostilities.

The group’s military spokesperson announced the measure on Monday, signaling a shift from previous rhetoric to active maritime restriction claims.

This development intensifies risks for shipping routes in the Red Sea and Gulf of Aden, where commercial vessels already face heightened insurance costs and rerouting delays.

Markets are likely to monitor freight rates and energy supply chains closely for signs of disruption, particularly given the proximity of key oil export terminals.

The blockade announcement follows a series of threats by Houthi leader Abdul-Malik al-Houthi, who previously vowed to target Saudi oil facilities if Riyadh escalated its involvement in the conflict.

Tensions in the Gulf have reached their highest level since a 2022 truce, with both sides exchanging statements that have kept diplomatic channels strained.