Saudi Arabia's state oil giant Aramco halted operations at its massive Ras Tanura refinery on Monday after a drone strike targeted the facility, an industry source told Reuters, marking a dramatic escalation in the regional conflict as Iran retaliated against U.S. and Israeli strikes that killed Supreme Leader Ayatollah Ali Khamenei.

Saudi Aramco is the world's biggest crude exporter
AFP

The attack on Ras Tanura—one of the world's largest refineries with a capacity of over 550,000 barrels per day—occurred early Monday local time amid a barrage of Iranian drones and missiles across the Gulf. Saudi Arabia's defense ministry confirmed that two drones targeting the site were intercepted by air defenses, with debris causing a limited, isolated fire that was quickly brought under control. No injuries were reported at the facility, and officials described the situation as stable.

Aramco shut down the refinery as a precautionary measure to assess damage and ensure safety, the source said. The company had not issued an official statement by midday Monday, but the closure added to fears of supply disruptions in global oil markets already strained by the widening conflict.

The strike represents Tehran's broadening retaliation following the U.S.-Israeli operation late Saturday that eliminated Khamenei and struck key Iranian sites. Iranian forces launched waves of attacks Sunday and Monday targeting U.S. assets, Israeli positions and Gulf allies, including strikes on airports in Dubai and Abu Dhabi, ports in Oman and Qatar, and military bases in Bahrain and Kuwait.

Analysts viewed the Ras Tanura incident as a significant shift. "The attack on Saudi Arabia's Ras Tanura refinery marks a significant escalation, with Gulf energy infrastructure now squarely in Iran's sights," said Torbjorn Soltvedt, Principal Middle East Analyst at Verisk Maplecroft. He noted it could push Saudi Arabia and other Gulf states closer to joining U.S. and Israeli military efforts against Iran.

Ras Tanura, located on Saudi Arabia's eastern coast along the Persian Gulf, serves as a critical export hub for crude oil and refined products. The facility processes vast volumes of Saudi crude and supports global supply chains, making any prolonged shutdown potentially impactful. Brent crude futures surged roughly 10% on Monday amid the news, reflecting investor concerns over regional stability and possible further disruptions in the Strait of Hormuz.

Saudi officials condemned the incident as "terror aggression," with the defense ministry spokesperson appearing on Al Arabiya TV to detail the interception. Online videos showed thick black smoke rising from the area post-strike, though Saudi authorities emphasized rapid containment and no major structural damage.

The broader campaign saw Iranian Shahed-136 drones implicated in the Ras Tanura hit, according to some reports. Similar drones targeted other Gulf sites, including debris causing minor injuries at Kuwait's Mina al-Ahmadi refinery and fires near ports in Bahrain and Oman. The UAE reported airspace closures and airport suspensions continuing from earlier strikes, while shipping in key lanes faced delays.

The conflict's expansion into energy infrastructure echoes past incidents, such as the 2019 Abqaiq attack attributed to Iranian proxies, which briefly halved Saudi output. This time, the direct Iranian involvement—framed by Tehran as legitimate retaliation—heightens risks of a wider war drawing in more actors.

U.S. officials reiterated support for allies, with President Donald Trump indicating on social media that operations against Iran would continue "until peace is achieved." Israel confirmed ongoing strikes in Lebanon and other areas, while Iran rejected U.S. talks overtures, vowing further responses.

Oil markets reacted sharply, with analysts warning of volatility if more facilities come under threat. Saudi Arabia has boosted production in recent weeks to offset potential shortfalls, but a sustained Ras Tanura outage could strain spare capacity. Global energy watchers monitor the Strait of Hormuz closely, through which roughly 20% of world oil passes.

For now, Aramco emphasized control and safety, with operations halted pending inspections. The incident underscores the vulnerability of Gulf energy assets in the current crisis, as Iran expands its retaliation beyond direct U.S.-Israeli targets to perceived enablers in the region.

As the third day of intensified strikes unfolded, the focus remained on containing escalation while assessing impacts on global supply. Saudi Arabia's swift defense response limited immediate damage, but the targeting of Ras Tanura signals a dangerous new phase in the conflict with profound implications for energy security and regional stability.