How did the September 10 drone attacks launched from Iraq against Saudi Arabia’s roughly 1,200-kilometer, 7-million-barrel-per-day East-West crude pipeline—whose shutdown removed the kingdom’s main bypass around the Strait of Hormuz after Saudi Aramco had raised it to maximum cap

The attacks turned a shipping disruption into a broader supply-system crisis: Saudi Arabia lost its principal pipeline route to the Red Sea just as Hormuz was constrained, tightening crude availability, raising risk premiums, and leaving global markets exposed to a potentially material physical shortfall. Oil prices rose on supply fears after the attacks; gas markets were also vulnerable through higher shipping, insurance, and LNG-routing risks, though the pipeline itself carries crude rather than natural gas. 3

• Saudi export constraint: The 7 million-barrel-per-day East–West line is Saudi Arabia’s main way to send crude to Yanbu without transiting Hormuz. Its closure therefore removed the kingdom’s essential bypass, not merely spare logistics capacity. 3 If Yanbu inventories truly cover only five to seven days of exports, storage can cushion disruptions briefly but cannot substitute for the pipeline; prolonged outage would force export reductions or production shut-ins. Reported estimates that as much as roughly 4% of global supply could be exposed should be treated as a risk scenario, not a confirmed loss. 1114

• Repair outlook is the key market variable: U.S. Energy Secretary Chris Wright’s expectation of a reopening “soon” would limit the disruption if the line can resume at reduced throughput. But reports of several weeks, five or six weeks, or months reflect uncertainty over damage, spare equipment, safety inspections, and the risk of renewed strikes. Saudi authorities had not provided a definitive public repair schedule in the initial reporting. 3

• Market implications: A short interruption mainly adds a geopolitical risk premium; an outage lasting beyond Yanbu’s inventory buffer could translate into lost Saudi exports and a sharper oil-price spike. The effects would be amplified because buyers cannot confidently replace barrels moving through a route built specifically to bypass Hormuz. 311

• Regional-security escalation: Iraq acknowledged that the launches originated from its territory, dismissed a military commander, and opened an investigation; it also reportedly closed three crossings with Iran while examining launch sites. That is significant because it places Baghdad under pressure to show it can prevent Iran-linked armed groups from attacking a Gulf neighbor, even as the militias’ umbrella organization denied involvement. 46

• Two maritime chokepoints were threatened at once: The reported Houthi capture of Perim/Mayun Island gave the Iran-aligned group a foothold in the Bab el-Mandeb, the southern entrance to the Red Sea. That increases the risk to tankers leaving Yanbu—the very outlet the East–West pipeline was designed to use—so reopening the pipeline alone would not fully restore Saudi export security. 15

• Diplomacy weakened rather than offsetting the threat: The Oman meeting between Iran and Gulf states on a temporary Hormuz shipping lane was postponed at Saudi Arabia’s request, delaying the most immediate potential mechanism for easing passage through the strait. 2 With Hormuz constrained, the Saudi bypass damaged, and Bab el-Mandeb newly threatened, the principal danger is a sustained or simultaneous disruption that removes physical barrels, raises freight and insurance costs, and pushes oil prices higher. 123