The fate of Iran rested last night in a grubby north Tehran highway interchange called Vanak Square where – after days of violence – supporters of the official President Mahmoud Ahmadinejad at last confronted the screaming, angry Iranians who have decided that Mirhossein Mousavi should be the president of their country. Unbelievably – and I am a witness because I stood beside them – just 400 Iranian special forces police were keeping these two armies apart. There were stones and tear gas but for the first time in this epic crisis the cops promised to protect both sides.