Houthi Naval Blockade Threatens Key Red Sea Chokepoint, Posing Risk to Oil Prices

Yemen’s Iran-aligned Houthi group has declared a naval blockade against Saudi Arabia, threatening to shut down the Bab el-Mandeb Strait, a move that could severely disrupt global energy markets. While the immediate market reaction was muted, with oil rising less than 1% to around $89 a barrel, analysts warn that a successful closure of the key maritime chokepoint would trigger a significant price surge and logistical chaos.

Threat to a Critical Waterway

The Bab el-Mandeb Strait connects the Red Sea to the Gulf of Aden and is a vital artery for crude oil and fuel shipments moving between the Middle East, Asia, and Europe. Yemen's Houthis announced the blockade on Monday, escalating a campaign of attacks on shipping that began in 2023, according to a Reuters report.

"After oil prices moved higher on escalating U.S.-Iran tensions last week... traders are watching for catalysts that would justify a further rally," said Richard Bronze of consultancy Energy Aspects. "The Houthis resuming maritime attacks and effectively shutting the Bab el-Mandeb would certainly qualify."

Impact on Oil Supply and Prices

A full blockade would have the most direct impact on Saudi Arabia's crude exports from its Red Sea port of Yanbu. The disruption would force tankers onto much longer and more expensive routes around Africa's Cape of Good Hope.

Key figures on the potential disruption include:

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• Over 4.5 million barrels per day (bpd) of crude and fuel have been shipped from Yanbu on average since April, with about 70% destined for Asia, according to Kpler data.
• Asian refiners could face shipping delays of around a month, said Matt Smith, commodity research director at Kpler, who called the potential first-month impact "massive."

Analysts believe a sustained disruption would drive prices significantly higher. John Paisie, president of Stratas Advisors, told Reuters that oil prices could climb back above $115-$120 a barrel. The disruption would also affect refined products, with European diesel refining margins already surging to a record above $65 a barrel last week.

Broader Economic Risks

The logistical challenges extend beyond rerouting ships. Fully loaded Very Large Crude Carriers (VLCCs) cannot transit the Suez Canal, and capacity on Egypt's SUMED pipeline, which bypasses the canal, is fixed, creating significant bottlenecks.

The repercussions could ripple through the entire global economy. "If they really stop and severely hinder those barrels through the Red Sea, that is going to have an impact on oil prices as well as refined product prices," Paisie said. "It undermines the whole global economy. At some point, you could have a global recession.”