Iraqi Hezbollah fighters carry the coffin of their comrade, Ali Mansour, who his family says was killed in Tikrit fighting Islamic militants, during his funeral procession, in the Shiite holy city of Najaf, 100 miles (160 kilometers) south of Baghdad, Iraq, Monday, March 2, 2015. Backed by allied Shiite and Sunni fighters, Iraqi security forces on Monday began a large-scale military operation to recapture Saddam Hussein's hometown from the Islamic State extremist group, state TV said, a major step in a campaign to reclaim a large swath of territory in northern Iraq controlled by the militants. (AP Photo/Jaber al-Helo)