Although possessing the strongest navy in the world, America dares not send its fleets into the narrow seas around the Straits of Hormuz that sees 20% of world oil exports.  In the absence of US military dominance of the area, Iran controls the flow of ships through it with cheap air and sea drones and there’s nothing Trump can do about it.  Iran’s illogical intransigence in the face of dire threats to remove their civilization from future history books and America’s impotence is driving Trump mad in all senses of the word as witnessed by his expletive filled Truth Social rant on 5 April, 48 hours before his final deadline.