It was all supposed to be so uncomplicated. Assassinate Iran’s Supreme Leader. Decapitate the leadership of the Islamic Revolutionary Guard Corps. Encourage the Iranian people to rise up in rebellion. Then watch from afar, with minimal US involvement, as the Islamic Republic, which has antagonised and exasperated America since the Iranian Revolution in the late-1970s, crumbled. Regime change might not be quite as straightforward as the lightning military operation which seized the Venezuelan president Nicolás Maduro and put in place a more US-friendly administration in Caracas. But, at most, Operation Epic Fury would be over in maybe four weeks. Six weeks tops. Here we are, however, eleven weeks on, with President Donald Trump still trying to bring to an end to a war he did not need to sta