Houthi Naval Blockade Threat Puts 2.5 Million Bpd of Saudi Oil at Risk
With the Strait of Hormuz almost completely closed for 150 days, Houthi action against the Red Sea would sever Saudi Arabia's primary remaining crude export route.
Saudi Arabia's Red Sea oil route has emerged as a new pressure point in the 2026 energy crisis, with the Houthi ceasefire breakdown on July 8 reopening hostilities just as the Strait of Hormuz enters its 150th day of near-total closure, Energyvoice reported Friday (2026-07-31). ICE Brent crude front-month stood at $91.04 a barrel as of Saturday morning (2026-08-01), down roughly $9 from the $100 level briefly reached in late July as Houthi attacks on Red Sea shipping intensified.7,6
The waterway now at risk is the Bab el-Mandeb Strait, the narrow passage linking the Red Sea to the Gulf of Aden. Energyvoice estimated Friday (2026-07-31) that its closure would strip an additional 12% of global oil trade from the market on top of what the Hormuz disruption has already removed. Under normal conditions, around 25-30% of global container traffic transits these waters, the same analysis found.7
The escalation sharpened on July 13, when Houthi forces fired ballistic missiles and drones at Saudi Arabia in what Rigzone described as the worst such attack in several years. The group claimed it had targeted specific Saudi facilities. Rigzone reported that the strikes threatened to draw the Iran-backed group into the wider conflict between Tehran and Washington.1
Rystad Energy put a volume figure on the exposure. In a market update sent to Rigzone on Monday (2026-07-20), the consultancy warned that 2.5 million barrels per day of Saudi oil production was at risk as the Houthis moved toward imposing a naval blockade. Jorge Leon, Rystad's senior vice president for geopolitical analysis, said the group had not yet specified how the blockade would be enforced but pointed to their previous campaign against commercial vessels as evidence of operational reach.3
Saudi Arabia's reliance on the Red Sea corridor explains the scale of the problem. Around 70% of the kingdom's energy exports are routed through the Red Sea, bypassing the already-compromised Hormuz strait, according to OilPrice.com. Saudi Aramco's terminal at Yanbu handles roughly 4 million barrels per day of Saudi crude exports — every barrel of which transits waters the Houthis have publicly threatened to interdict.2,4
Aramco appears to have moved early. In the weeks before the July escalation, the national oil company shipped record volumes of crude from Yanbu, OilPrice.com reported, in what looked like an effort to pre-position supply before any blockade could take hold.4
Iran's role is direct. OilPrice.com reported in mid-July that Tehran had instructed the Houthis to prepare to disrupt the Red Sea oil route specifically if the United States attacked Iranian power infrastructure. Missiles and drones were reportedly deployed near the Bab el-Mandeb Strait, with forces awaiting orders from the IRGC before any action began.2
Foreign Policy, in an analysis published July 22, described Yemen as an "unsteady stalemate" where both sides sought to increase leverage without formally returning to full-scale war. The four-year truce between the Saudi-led coalition and the Houthi movement had appeared to hold under pressure; Energyvoice confirmed Friday (2026-07-31) that it had broken down on July 8, with hostilities since resumed.5,7
Enforcement remains the core uncertainty for traders. The Houthis have announced a blockade intent without specifying operational targets or tactics. Leon noted that the group's previous Red Sea campaign showed an ability to disrupt commercial shipping at scale. But moving against Saudi export terminals at Yanbu would be a materially different proposition — requiring either direct strikes on tankers loading there or a sustained missile and drone campaign against port infrastructure, rather than harassment of vessels in transit.3
ICE Brent front-month at $91.04 as of Saturday morning (2026-08-01) has pulled back nearly $9 from the $100 level briefly touched in late July, suggesting some geopolitical premium came out of the market even as the blockade threat stayed active. Saudi Arabia's 4 million barrel-per-day Red Sea exposure is unresolved. A Houthi strike on Yanbu-bound tankers, or a US military response to any such move, would immediately put the current ICE Brent front-month price under renewed pressure.7,3,4,6