A flag of the Shiite Hezbollah militant group flutters over a mural depicting the emblem of the Islamic State (IS) group in Al-Alam village, northeast of the multi-ethnic Iraqi city of Tikrit, on March 9, 2015, during a military operation by Iraqi government forces and tribal fighters to regain control of the Tikrit region from jihadists. After being forced out of the province of Diyala earlier this year, the IS jihadists are now fighting off a huge assault on the city of Tikrit as government and allied forces continue to work their way north towards the main IS stronghold of Mosul. AFP PHOTO / YOUNIS AL-BAYATI (Photo credit should read YOUNIS AL-BAYATI/AFP via Getty Images)
