Saudi Arabia shut down its East-West oil pipeline after a drone attack as Houthi forces expanded their position near one of the world's most important maritime chokepoints. Together, the developments place pressure on two routes designed to keep energy and trade moving when the Strait of Hormuz becomes dangerous.
The 1,200-kilometre pipeline carries crude from eastern Saudi production areas toward the Red Sea, allowing exports to bypass Hormuz. Reuters reported that it can move roughly 4 million to 5 million barrels per day, equivalent to about 4% to 5% of global oil supply.
At the same time, Houthi forces reached Perim Island and the nearby mainland area of Dhubab at the southern entrance to the Red Sea. Control around the Bab el-Mandeb Strait can threaten ships travelling between the Indian Ocean and the Suez Canal.
What happened to the pipeline?
A drone struck the East-West pipeline, causing damage and injuries and leading Saudi authorities to halt operations. The attack was believed to have originated in Iraq, where Iran-aligned militias operate, although responsibility had not been conclusively assigned at the time of reporting.
Iraq's government opened an investigation, dismissed a military commander and closed a border crossing with Iran as it examined the origin of the drone. Saudi Arabia did not immediately retaliate and gave Baghdad time to investigate.
The distinction between suspected origin and proven responsibility is important. Drone routes, component origins and claims by armed groups must be verified before attributing an attack to a government.
Why is the East-West pipeline so important?
Most Saudi oil production is located in the east, close to the Gulf. Tankers normally reach international markets through the Strait of Hormuz, the narrow passage between Iran and Oman.
The East-West pipeline, also known as Petroline, moves oil overland to Red Sea export facilities. It functions as strategic insurance when Gulf shipping is disrupted.
If Hormuz traffic is restricted while the bypass pipeline is also unavailable, Saudi Arabia has fewer options for maintaining exports. That is why damage to one piece of infrastructure can influence oil prices far beyond the immediate physical loss.
What is Perim Island?
Perim, also called Mayyun, sits in the Bab el-Mandeb Strait between Yemen and Djibouti. The strait connects the Red Sea with the Gulf of Aden and the Arabian Sea.
Ships using the Suez Canal route between Europe and Asia must pass through this area. A force operating from the island or nearby coast could monitor traffic, launch drones or missiles and make insurers treat the route as more dangerous.
Control of Perim does not automatically close the waterway. Naval patrols, geography and the capability of the force all matter. But even the credible threat of attack can raise freight and insurance costs or push vessels onto the much longer route around Africa.
How did the Houthis reach the area?
Reuters reported that Houthi forces seized the Red Sea town of Mocha, moved toward Dhubab and established control on Perim amid the wider regional conflict. Yemen's internationally recognised, Saudi-backed government was preparing a counter-offensive.
Iran supports the Houthis, while Tehran denies that the movement acts simply as its proxy. The group has its own Yemeni political and military objectives, but Iranian weapons, training and strategic alignment shape how regional governments assess the threat.
The advance broadens the risk beyond Hormuz. Oil and container shipping now face pressure at both the Gulf entrance and the southern Red Sea.
What does this mean for oil prices?
Oil prices respond to the probability of future supply loss, not only barrels already removed. Traders must estimate how long the pipeline will remain closed, whether Saudi exports can use storage and alternative routes, and whether fighting will escalate.
Prices above $100 reflect that uncertainty. If repairs are rapid and the conflict does not widen, part of the risk premium can ease. If attacks continue or Bab el-Mandeb traffic falls sharply, fuel and shipping costs could rise further.
Consumers experience the impact through petrol, diesel, aviation fuel and goods transported by sea. Countries dependent on imported energy are especially exposed.
Why not send every ship around Africa?
The Cape of Good Hope route avoids the Red Sea but adds distance, fuel use and time. More ships are then required to carry the same volume of cargo on a fixed schedule.
Longer voyages also absorb tanker and container capacity, pushing freight rates upward. Perishable goods and just-in-time supply chains can be disrupted even when cargo eventually arrives safely.
Shipping companies choose routes by balancing threat intelligence, insurance, customer contracts and naval protection. There is no single decision that fits every vessel.
Could the conflict expand?
Saudi Arabia requested US military assistance, while Washington had so far offered intelligence support rather than direct intervention, according to Reuters. A Saudi strike on suspected launch sites could trigger retaliation and draw more armed groups into the confrontation.
Baghdad has an incentive to prove that Iraqi territory will not be used for regional attacks. Its investigation therefore carries diplomatic importance as well as domestic security consequences.
The immediate priorities are repairing the pipeline, protecting Red Sea traffic and preventing attribution claims from producing a wider war before evidence is established.
This crisis demonstrates why energy security depends on multiple routes. The Saudi pipeline was built to reduce dependence on Hormuz, but the Red Sea outlet has its own chokepoint. When both become exposed at once, a regional attack can quickly become a global economic event.
Source: Reuters, September 12, 2026.
