Iranian riot police protect the French Embassy in Tehran, Iran, Thursday, Sept. 20, 2012, during a protest against the publication of caricatures of Islam's Prophet Muhammad by a French satirical weekly. Dozens of Iranian students and clerics gathered outside the embassy and chanted &quot;Death to France&quot; and &quot;Down with the U.S.&quot; and burned the representation of the U.S. and Israeli flags Thursday. (AP Photo/Vahid Salemi)