A US fighter jet disabled two Iranian-flagged tankers to enforce a port blockade on Friday, prompting retaliatory attacks and rattling a shaky truce as Tehran weighed Washington's latest proposal to end the Middle East war.
A parallel ceasefire in Lebanon was also under strain on Friday, as Iran-backed Hezbollah launched missiles at a military base in Israel in response to a Beirut strike that killed a top commander and other attacks in the south.