A member of the Iraqi security smokes a cigarette atop a damaged house in the southern entrance of the city of Tikrit on March 29, 2015 during a military operation to retake the northern Iraqi city from Islamic State (IS) group jihadists. IS spearheaded a sweeping offensive last June that overran much of Iraq's Sunni Arab heartland, and the operation to retake Tikrit is Baghdad's largest to date against the militants. AFP PHOTO / AHMAD AL-RUBAYE (Photo credit should read AHMAD AL-RUBAYE/AFP/Getty Images)
