Yemen's Houthi movement, also known as Ansar Allah, has declared an immediate naval blockade against Saudi Arabia, marking a significant escalation in the protracted conflict. This declaration follows a recent attack on Sanaa International Airport and comes amidst heightened tensions between the United States and Iran, which have already impacted global energy flows through the Strait of Hormuz.
'An Eye for an Eye' Escalation
In their official statement, the Houthis cited the principle of "an eye for an eye," asserting their right to impose a maritime embargo in response to what they describe as Saudi Arabia's nearly 12-year "unjust and oppressive siege" on Yemen. They accuse Saudi forces of blockading Yemeni ports and airports and plundering the nation's resources.
The group has announced complete readiness for all options and issued a stern warning that any further Saudi actions would be met with a "comprehensive and decisive response." They have also called for general mobilization among their supporters, urging preparedness for various scenarios.
Strategic Waterways Under Threat
The declaration raises serious concerns about potential disruptions to international shipping and energy supplies, particularly through the Bab al-Mandeb Strait. This crucial waterway links the Red Sea with the Gulf of Aden and is one of the world's most vital maritime corridors, located between Yemen and the Horn of Africa. At its narrowest, it is just 29 kilometers wide, channeling traffic through two navigation channels.
Previously, the Houthis targeted vessels around the Bab al-Mandeb after the Gaza war began in 2023, though these attacks ceased following a ceasefire in October of that year. It remains unclear how the group intends to enforce this new blockade or if it signals a renewed campaign against international shipping.
Global Energy Implications
The Strait of Hormuz has been effectively closed since a US-Israeli conflict with Iran began in late February. This has forced Saudi Arabia to increasingly rely on its 1,201-km East-West pipeline to transport crude from the Abqaiq oil field to the Red Sea port of Yanbu. From Yanbu, tankers transit through the Bab al-Mandeb Strait to reach Asian markets.
Recent ship-tracking data indicates that shipments from Yanbu have averaged 4 million barrels per day, a significant increase from approximately 973,000 barrels per day a year prior. In June, petroleum volumes transiting Bab al-Mandeb reached 7.4 million barrels per day. Any disruption at Bab al-Mandeb, in conjunction with the situation in Hormuz, could potentially block up to 25% of the world's oil and gas supply, with severe repercussions for global energy markets.