The Iranian Revolutionary Guard Corps fired on at least two ships in the waters near Oman, after Tehran again moved to close the Strait of Hormuz on Saturday, according to a report citing a US official — as President Donald Trump accused Iran of trying to “get cute” while warning the regime “can’t blackmail us.” Two IRGC gunboats approached a tanker about 20 nautical miles northeast of the Gulf country around 1 p.m. local time — and opened fire unprovoked, the tanker’s master reported, according to the United Kingdom Maritime Trade Organization.