“Iran’s Islamic Revolutionary Guard Corps attacked a Singapore-flagged cargo ship Thursday in the Strait of Hormuz, testing the deal to end the fighting and reopen the vital shipping lane that the U.S. and Iran signed last week,” the Wall Street Journal reports.“The attack, which inflicted damage on the ship’s bridge but left no casualties, according to U.K. Maritime Trade Operations, took place near the coast of Oman hours after the Iranian paramilitary’s navy warned ships not to use routes through the waterway that the regime hadn’t sanctioned.”