Kurdish Peshmerga fighters are facing stiff resistance from the Islamic State of Iraq and the Levant (ISIL), as they attempt to break the group's siege of Iraq's Sinjar Mountains. Hundreds of people from Iraq's Yazidi minority have been trapped on the mountain since ISIL stormed Sinjar and other Kurdish-controlled parts of northern Iraq in August. Al Jazeera's Mohammed Adow reports from Erbil in northern Iraq.