US president Joe Biden has promised Israel his country’s “ironclad” support, as Iran vows retaliation for the deadly strike on the Iranian consulate in Syria earlier this month.

The US military believes Israel carried out the airstrike on Iran’s diplomatic station, which killed two top generals and others.

Israel has not commented on the attack, but Tehran says it holds Israel responsible.

The White House says it had no prior knowledge of the operation, but has repeatedly promised to back Israel in the face of Iranian threats.