Iraqi Kurdish Peshmerga fighters gather in Sinjar, west of the northern Iraqi city of Mosul on December 21, 2014 after an operation which broke the second Islamic State jihadist group (IS) siege of Mount Sinjar this year. The operation threatens the links between the city of Mosul, the main IS stronghold in Iraq, and territory the militant group controls in neighbouring Syria. AFP PHOTO / SAFIN HAMED (Photo credit should read SAFIN HAMED/AFP/Getty Images)
