Saudi Arabia’s Pipeline Lifeline Is a Target as Houthi Threat Resurfaces

The war in the Middle East has triggered the largest supply shock in the global oil market's history. With the Strait of Hormuz, a critical waterway that normally carries about a fifth of global oil, now largely closed, flows through the region have plummeted from around 20 million barrels per day to a trickle. This has forced Gulf producers to slash production by between 7 and 12 million barrels daily since early February.

Saudi Arabia, the world's top exporter, has cut output by some 2 million barrels per day to around 8 million bpd. This drop stems from shutting down production from two major offshore fields, Safaniya and Zuluf, which together produce over 2 million bpd. The kingdom's primary escape hatch is the East-West Pipeline, a 1,200-kilometer system built decades ago to bypass the Strait. The pipeline's maximum capacity is 7 million barrels per day, but the real test is in the logistics at the end of the line.

The bottleneck is now at the Yanbu port on the Red Sea. Despite the pipeline's potential, average daily loadings there have been stuck around 4 million barrels. This is a significant increase from earlier in March but still well below the pipeline's theoretical limit and far short of the February export average of 7.1 million barrels per day. The port and shipping infrastructure are straining to handle the redirected flows, with tankers lining up to load.

This pipeline workaround is a fragile lifeline. It allows Saudi Arabia to keep some crude moving and provides a crucial buffer for global markets, but it is insufficient to offset the full loss from the closed Strait. The system is operating under immense pressure, and its ability to handle a sustained, large-scale rerouting remains unproven.

The Houthi Threat: A New Vulnerability

The pipeline's workaround has created a new and dangerous vulnerability. While the East-West Pipeline bypasses the closed Strait of Hormuz, the crude it carries must still be shipped via the Red Sea and the Bab el-Mandeb Strait. This route is a known chokepoint, having been the target of Iranian-backed Houthi rebels for two years. Their attacks then caused the biggest disruption to global trade since the pandemic, forcing many ships to take the much longer, costly detour around Africa.

That threat has now resurfaced. Iranian-backed Houthi rebels have recently resumed attacks on Israel, launching ballistic missiles toward southern Israel earlier this month. This marks a significant escalation, as the rebels had held back for nearly a month after the US and Israel launched a major bombing campaign on Iran. The Israeli military has responded by preparing for a "multifront war," a statement that directly acknowledges the Houthis as a potential new front.

This development casts a long shadow over Saudi Arabia's pipeline lifeline. The crude moving through the pipeline is destined for the Yanbu port on the Red Sea, making it a prime target for renewed Houthi attacks. The group has already demonstrated its capability to strike sensitive military sites in Israel, and its history shows it will target commercial shipping to disrupt global trade. The lingering threat has been enough to deter Western shipping firms from the region, a cautionary tale for the current situation.

The bottom line is that the pipeline provides a physical bypass for oil, but not a political or security one. It simply shifts the point of potential disruption. As long as the Houthis remain an active player in this conflict, the Red Sea route will carry a persistent risk of being shut down again. This adds a layer of instability to an already fragile market, where any new supply shock could quickly amplify existing pressures.

Quantifying the Supply Gap

The pipeline workaround is a critical but insufficient response to a historic supply shock. Gulf countries have slashed total oil production by at least 10 million barrels per day since early February, with Saudi Arabia's cut alone accounting for about 2 million bpd. The East-West Pipeline's role is to mitigate this loss, but its spare capacity is a fraction of the problem. The system's maximum capacity is 7 million bpd, but with average daily loadings at Yanbu around 4 million bpd, the pipeline's usable spare capacity is only about 2.4 million bpd. That leaves a staggering gap of roughly 7.6 million bpd that the pipeline cannot cover.

This math reveals the fragility of the situation. The pipeline provides a vital lifeline, but it is a lifeline that can only handle a third of the production cut. The rest of the reduction is being absorbed by shuttered fields and idle refineries, a direct hit to global supply. The International Energy Agency projects that global oil supply will plunge by 8 million bpd in March, with the Middle East curtailments partly offset by higher output from non-OPEC+ producers like Kazakhstan and Russia. Yet even with that partial offset, the market faces a severe contraction.

The bottom line is one of mismatched scales. The pipeline's capacity is a physical solution to a geopolitical problem, but it is simply too small to solve the crisis. It buys time and provides a buffer, but it does not eliminate the fundamental supply gap. For now, the market is absorbing this shock through a combination of inventory draws and demand destruction, but the long-term stability of the system hinges on whether the pipeline's capacity can be expanded or if the conflict resolves before storage runs dry.

Market Impact and What to Watch

The pipeline workaround is holding, but its stability is a function of three critical watchpoints. The market's next move hinges on whether these factors remain in balance or tip toward disruption.

First, monitor daily loadings from Yanbu and any changes in pipeline utilization. The system is already operating under strain, with average daily loadings at Yanbu around 4 million barrels and shipping data pointing to a record month. The pipeline's maximum capacity is 7 million bpd, but the real constraint is the port and shipping logistics at the end of the line. If loadings stall or tankers begin to queue significantly longer, it signals the physical system is hitting its limits. The International Energy Agency notes the Saudi system had spare capacity, but that margin is tight and untested at this scale. Any sign of a logistical breakdown here would immediately tighten the global supply squeeze.

Second, watch for renewed Houthi attacks on Red Sea shipping. This is the most immediate threat to the pipeline's entire purpose. The crude moving through the East-West Pipeline is destined for the Yanbu port, making it a prime target. The recent escalation is clear: Iranian-backed Houthi rebels have resumed attacks on Israel, and the Israeli military has prepared for a "multifront war". The Houthis have a history of targeting commercial shipping to disrupt trade, and their capability remains. A new wave of attacks would not only threaten tankers but could force a costly reroute around Africa, negating the pipeline's value and sending prices soaring.

Third, track the duration of the Iran conflict and any diplomatic breakthroughs. The pipeline is a temporary fix for a geopolitical problem. The fundamental supply gap exists because the Strait of Hormuz is closed. Any progress toward de-escalation or a deal to restore flows through that chokepoint would directly reduce the pressure on the pipeline and Yanbu. Conversely, a prolonged or expanding conflict increases the risk of further disruptions and makes the pipeline's fragile route even more critical-and vulnerable. The market will be watching for any signals from diplomatic channels that could shorten the timeline for a return to normalcy.

The bottom line is that the pipeline provides a buffer, but it is a buffer with three potential weak points. The market's stability depends on all three-logistics, security, and diplomacy-remaining intact. Any failure in one could quickly amplify the shock.