Al Jazeera English - Focus - The Reality Of Iraq's Many Armies

Al Jazeera English - Focus - The Reality Of Iraq's Many Armies: "Four years ago the fighting in Iraq was just beginning. The armed group al-Qaeda in Iraq did not even exist and Sunni and Shia groups were working together against the US-led forces. Three years ago, sectarian divisions escalated into a battle some believe has reached civil war proportions."