Saudi Arabia has shut down a critical oil pipeline after a drone attack by allies of Iran, opening a new and potentially consequential front in the Middle East war as fighting around Yemen threatens to disrupt two of the region’s most important energy and shipping corridors.
The strikes on Saudi energy infrastructure came as Houthi militants allied with Iran overran a swathe of Yemen’s coastline, expanding their control over an important corridor through the Red Sea. Their growing presence around the Bab El-Mandab Strait increases Iranian influence over a second major shipping route out of the Middle East, adding another pressure point to a conflict already affecting the movement of oil through the Gulf.
The developments, reported by the UK publication The Observer, have sent oil prices higher as traders assess whether the escalation could reduce the quantity of Gulf oil reaching global markets. The attacks also come at a politically sensitive moment for the United States, with another front emerging against the US and its allies in the region ahead of crucial midterm elections.
The Saudi foreign ministry said the drones that targeted the East-West pipeline had been launched from Iraq, where militias operate beyond the government’s control. The pipeline links Abqaiq, near the Gulf, with the port of Yanbu on the Red Sea. Its strategic importance lies in its ability to provide Saudi Arabia with an alternative route for exporting oil, allowing it to bypass the Strait of Hormuz.
That alternative has become increasingly significant as Iran has throttled the Strait of Hormuz in response to the war launched by the US and Israel. The pipeline therefore represents more than a piece of Saudi energy infrastructure: it is part of the network of routes intended to reduce dependence on one of the Middle East’s most vulnerable maritime chokepoints.
The attack has also highlighted the difficulties confronting Iraq’s government. Prime minister Ali al-Zaidi condemned the strike and vowed to prevent Iraq from being used as a staging ground for aggression. But the incident has exposed the limits of Baghdad’s authority and the challenges he faces in bringing Iran-backed militias under control.
The timing adds another layer of uncertainty. US troops will withdraw from Iraq at the end of the month, meaning there will be none in the country for the first time since the 2003 invasion. The prospect of the US departure comes as the Iraqi government confronts questions over the activities of armed groups operating beyond its control and their potential role in the wider regional conflict.
The Houthis themselves had remained largely on the sidelines of the regional war until a delegation attended the funeral in July of supreme leader Ayatollah Ali Khamenei. Upon returning to Yemen, hostilities with Saudi Arabia flared, marking the end of a UN-backed ceasefire agreed in 2022.
Last week, Houthi forces routed Saudi-backed Yemeni government forces from the Red Sea port city of Mokha and a strategic island in the strait. The advances have strengthened the group’s position along a maritime corridor whose importance extends well beyond Yemen’s borders.
The Houthis have threatened to target Saudi vessels but say they pose no threat to other international shipping. At the same time, they have targeted commercial shipping through the Red Sea using drones and missiles, including a deadly attack on a Tanzanian-flagged cargo ship in August.
The group’s actions have placed renewed pressure on Washington to decide how far it is prepared to intervene. Donald Trump declined requests last week from Saudi Arabia’s Mohammed bin Salman to launch strikes against the Houthis, Axios reported.
Speaking during a trip to Ireland, the US president said the Houthis had contacted the White House to say they did not want to fight the US. “They don’t want me to go after them,” Trump said. “They’re letting most ships go through. There’s just one country they’re not too happy with. And we’ll get that straightened out.”
The Houthi offensive has come at a moment when Tehran’s leverage appeared to be declining. Iran has constrained oil shipments through the Strait of Hormuz, but its own exports through the waterway have been choked off entirely since July by a US naval blockade, while its economy is in deep distress.
At the same time, the US has helped Gulf Arab states move significant amounts of their crude oil through the strait despite Iranian attacks, while developing alternate routes. The Saudi pipeline attacked by drones is one such route, making the strike particularly significant as the wider conflict increasingly revolves around the ability of states to control or circumvent critical maritime passages.
For Baraa Shiban, a researcher and political analyst on Yemen and the Gulf at the Royal United Services Institute, a London-based defence thinktank, the Houthi offensive strengthens Iran’s position.
“This is very good news for the Iranians,” said Shiban. “The issue of the threat of Hormuz has been their strongest negotiating card. Now, if they add to the mix the Bab el-Mandab strait, they can go to Trump and say, ‘These guys were also troubling you at the Red Sea. We can also help with that.’”
The significance of the developments extends beyond the immediate fighting. With the Strait of Hormuz and Bab el-Mandab both becoming increasingly entangled in the conflict, the Middle East’s energy infrastructure and maritime routes are being drawn more deeply into the war. Any sustained disruption could have consequences for the movement of oil well beyond the countries directly involved.
The political stakes in Washington are equally pronounced. On Thursday, Trump conceded that the war – which he claimed would be over in a few weeks and is deeply unpopular with his Republican party and the American public – was unlikely to end before the midterms in November because Iran was “desperate to try and affect the election”.
“Right after the election, oil prices are going to be tumbling downward,” Trump said. Iran wanted him to lose so they could “have their nuclear weapon”, he added.
The competing pressures – military escalation, oil markets, maritime security and domestic politics – have therefore become increasingly intertwined. The Houthi advance has provided Iran with another potential lever at a time when its ability to exert pressure through the Strait of Hormuz has itself been constrained.
On Saturday, China offered to mediate between the US and Iran, introducing a diplomatic dimension to an increasingly internationalised conflict. “The war… does not serve the common interests of the international community,” President Xi Jinping told the official Xinhua news agency on the sidelines of the Brics summit in Delhi.
For now, the shutdown of Saudi Arabia’s pipeline and the Houthi expansion along the Red Sea underline how quickly the geography of the conflict is changing. What began as a war centred on competing military and political objectives is increasingly being fought around the infrastructure and waterways on which the global movement of energy depends. With Hormuz under pressure and Bab el-Mandab now increasingly exposed, the consequences of the next escalation may extend far beyond the Middle East.
