An attack on two oil tankers off Iraq killed at least one crew member, an Indian national, as Iran pressed a campaign to disrupt global energy markets in retaliation for US and Israeli strikes. Iran said it was behind one of the attacks, but made no comment on the other.

Oil-rich Iraq has long been a proxy battleground between the United States and Iran, and saw itself dragged straight into the Middle East war after Israel and the US attacked Iran on February 28. Within hours, warplanes and missiles from every direction filled its airspace, and on Thursday, an attack on two oil tankers killed at least one crew member, an Indian national.

Farhan Al-Fartousi, from Iraq’s General Company for Ports, told AFP that “all crew members of the two tankers were rescued,” adding that the 51 workers were in good condition. The attack killed at least one crew member, said Fartousi.

India’s embassy in Iraq said on Thursday an Indian national had died in the attack, with 15 other Indian crew members evacuated. The attack occurred roughly 50 kilometres (30 miles) from Iraq’s coast.

Iraq’s State Organisation for Marketing of Oil (SOMO) said that two tankers are Maltese-flagged oil ZEFYROS and the SAFESEA VISHNU which was sailing under the Marshall Islands flag.

Iran’s Revolutionary Guards said Thursday they had struck the Marshall Islands-flagged ship Safesea, which they claimed was US-owned, in the north of the Gulf “after ignoring and not complying with warnings and alerts”.

The Strait of Hormuz, a waterway carrying a fifth of the world’s oil, remains closed to almost all oil tankers, and Iran has vowed that not one litre of oil would be exported from the Gulf while the war continues.