The street outside the empty embassy in Belgrave Square, London, was closed off as it filled with protestors and Islamic leaders chanting loudly and calling for America to be punished over Aleppo. The demonstration became an alternative to an official rally calling for an end to the bloodshed in Syria outside Downing Street. During the speeches which lasted almost an hour the crowd chanted Allahu Akbar 'God is the greatest' and cheered for those calling for a global caliphate. A poet invited to talk shouted: "We need a Caliph who will clean up these streets. Who will smack up armies and who will back beef [fighting].  "Backhand your missiles back to your land, that’s the plan.  "World domination at hand. We can expand and take out these fools." The crowd largely segregated into men and women…