Standing among a crowd gathered in central Tehran late one night in May, Mohsen, 34, appeared visibly frustrated as he spoke. “Why should we stay home?” he said. “So they can attack again, send their soldiers in and turn Iran into another Syria, Iraq, Afghanistan or Libya?” Since the US-Israeli war on Iran began on 28 February, Mohsen said he has attended as many of the nightly rallies in support of the Iranian government as possible.