ASEAN Sounds Alarm as US-Iran War Threatens Southeast Asia's Energy Lifeline

By the time the gavel came down in Pasay City on July 21, the United States and Iran had been at war for ten days, and roughly one-fifth of the planet's crude had effectively stopped moving. The Strait of Hormuz, the narrow sealane between the Persian Gulf and the Gulf of Oman, had become a war zone. The eleven foreign ministers of ASEAN, gathered at the Philippine International Convention Center for the bloc's 59th foreign ministers' meeting, did not hedge. They called for an "immediate cessation" of hostilities and for safe transit through the strait to be restored. The statement was unusual in its urgency, and so was the company in the room: US Secretary of State Marco Rubio, who had flown to Manila to hear it ³⁴¹⁰.

The arithmetic of ASEAN's anxiety is hard to argue with. The bloc's combined population of around 680 million imports the bulk of its crude from the Middle East, and almost all of that oil transits Hormuz. Close the strait and you do not merely inconvenience Southeast Asian refineries; you expose them. ASEAN diplomats said the war would have "immediate and long-term effects" on the region and its people, language stronger than the cautious communiqués the bloc is famous for ³⁴⁵.

It was the framing that mattered. Philippine Foreign Affairs Secretary Ma. Theresa Lazaro opened the meeting, and the ministers, rather than waiting for the broader ASEAN Regional Forum two days later, chose to issue a separate statement, an unusual break with diplomatic choreography that signaled how seriously the ministers were treating the energy shock ¹⁰. Rubio, standing in the same room, did not soften the American position. Iran controlling the strait, he said, "would set a dangerous precedent," and warned that freedom of navigation through the waterway was not negotiable for the United States or for Southeast Asia ²⁹.

Rubio insisted the United States remained open to diplomacy but would protect its interests and allies if talks failed. He also pointed to what he cast as a pattern of broken Iranian commitments, an unusually blunt framing from a secretary of state speaking on ASEAN's own platform. The message was clearly meant for two audiences. For Iran, it was a warning. For the ministers sitting in front of him, it was an attempt to anchor ASEAN's response inside an American-led diplomatic track rather than let it drift toward the kind of neutral-pleading that Gulf crises tend to produce ²⁹.

By the time the ASEAN Regional Forum opened in Manila on July 23, the geography of the crisis had widened. Houthi forces in Yemen, Iranian allies in the years-long proxy war that has scarred the Arabian Peninsula, had begun attacking Saudi oil tankers and threatening a blockade of Saudi ports. The Bab-el-Mandeb strait, the southern gateway to the Red Sea and the Suez route to Europe, became what one regional headline called "a second chokehold on global oil supplies" ⁸¹¹. Two chokepoints, both nominally under threat, and the world's most traded commodity caught between them.

ASEAN's response, beyond the statement, was a sustained push for open shipping lanes through Hormuz and for restraint on all sides. Indonesian and Malaysian envoys were prominent in the consultations; Singaporean outlets framed the meeting as the most security-focused ASEAN Regional Forum in years, held "amid US-Iran war, Hormuz blockade" ⁶⁸¹¹. The diplomacy was real. Whether it moved the parties in the Gulf was another question.