Houthi Attacks Threaten Saudi Bypass Pipeline; Nine-Month Lull Ends as Alternative Route F

Houthi militants in Yemen resumed maritime attacks on July 22, 2026, after nine months of dormancy, targeting Saudi Arabia directly and cracking open a vulnerability that regional energy planners had hoped to avoid: the bypass infrastructure built to replace the Strait of Hormuz is itself now under sustained assault.

The operational stakes are considerable. Saudi Arabia had constructed an alternative export corridor at speed once the Strait of Hormuz became impassable in March 2026. The East-West pipeline connecting the Abqaiq oil processing facility to the Red Sea port of Yanbu reached full capacity of 7 million barrels per day within days of the closure. That allowed Saudi Arabia to export approximately 3.43 million barrels per day in May, well below prewar levels but far above what neighboring producers like Kuwait could manage, given their total dependence on Hormuz passage. The entire plan rested on one condition: that the Houthis would not target Saudi vessels transiting the Red Sea. That understanding has now collapsed.

Since July 20, Houthi forces have struck at least four oil tankers in the Red Sea. Saudi Arabia has responded with airstrikes against Houthi targets in Yemen, the first such strikes since the 2022 truce. Iranian-aligned groups in Iraq have simultaneously targeted Saudi oil infrastructure, with reports of potential damage to the Abqaiq processing facility itself, the nerve center of Saudi oil operations. On July 28, Saudi Arabia conducted joint airstrikes with the United States in Iraq, a move that risks drawing the kingdom into a broader conflict it has spent years trying to avoid.

The Houthis had stayed largely quiet during the first phase of the Iran war, which began February 28, 2026, following Israeli and U.S. attacks on Iran. The group had already absorbed serious damage: U.S. airstrikes in early 2025 ended only through an Oman-brokered ceasefire, and Israeli strikes in August 2025 killed the Houthis’ prime minister and nine cabinet members, degrading the organization’s technical capacity considerably. That damage appeared to constrain the group’s appetite for escalation through the spring.

What changed: a Houthi delegation traveled to Tehran aboard Mahan Air (the Iranian airline designated by the U.S. Treasury for links to Iran’s Islamic Revolutionary Guards Corps) to attend the funeral of former Supreme Leader Ayatollah Ali Khamenei. The flight was the first direct air connection from Houthi-controlled Yemen to Iran since 2015. When the delegation attempted to return on July 12, Saudi Arabia struck the runway at Sanaa airport, forcing the aircraft to divert to Hodeidah. Reports indicated the return flight carried IRGC personnel along with missile and drone components. The Houthis subsequently announced a naval blockade targeting Saudi Arabia, the most serious escalation of Saudi-Houthi tensions since the 2022 ceasefire.

Meanwhile, a separate strike extended the risk zone beyond the Arabian Peninsula entirely. Suspected Iranian drones hit a floating liquefied natural gas storage facility at Egypt’s Damietta port on the Mediterranean, igniting a fire that spread to a nearby tanker. The attack signals that even the western end of the bypass corridor faces exposure.

The geographic logic is straightforward and troubling. If Houthi targeting of Red Sea vessels triggers shipping restrictions comparable to those imposed on Hormuz traffic, a second critical chokepoint, the Bab al-Mandab Strait between Yemen and the Horn of Africa, becomes effectively inoperable. Tankers would then be forced northward through the Suez Canal to the Mediterranean, adding roughly four weeks to transit times and substantial costs for Asian-bound shipments. The world’s largest oil tankers cannot transit the Suez Canal directly, but they can use the SUMED pipeline to move oil from the Egyptian Red Sea port of Ain Sokhna to the Mediterranean port of Sidi Kerir for onward shipment. An attack on those Mediterranean facilities would create a scenario in which Saudi Arabia’s west coast ports are as vulnerable to disruption as its east coast ports in the Gulf, with the Red Sea effectively restricted at both ends.

The first phase of the Iran war demonstrated how rapidly risk assessments reshape shipping behavior and insurance calculations. The latest attacks threaten to replicate that dynamic across the Red Sea corridor. Whether shippers and insurers continue to treat these routes as operationally viable, or begin pricing in a second closure, is the question that will determine how much further the disruption spreads in the weeks ahead.