Protesters shout anti-Iran slogans and hold placards in front of the Iranian embassy on December 16, 2016, in Istanbul, during a demonstration against Iranian involvement in the siege of Aleppo, the latest in a series of demonstrations in Europe over the Syria crisis. Turkey has provided support to the Syrian opposition and repeatedly called for Assad to go. Protests have been staged in several European cities as the horror in Aleppo has unfolded, with reports of atrocities including summary executions. / AFP / OZAN KOSE (Photo credit should read OZAN KOSE/AFP/Getty Images)
