Masked Shi'ite fighters hold their weapons in Al Hadidiya, south of Tikrit, en route to the Islamic

Masked Shi'ite fighters hold their weapons in Al Hadidiya, south of Tikrit, en route to the Islamic State-controlled al-Alam town, where they are preparing to launch an offensive on Saturday, March 6, 2015. Iraqi government forces and Iran-backed militiamen entered a town on the southern outskirts of Saddam Hussein’s home city Tikrit on Friday, pressing on with the biggest offensive yet against Islamic State militants that seized the north last year