Young Iraqi children play at a military base belonging to the former Iraqi army, destroyed eight years ago during the air campaign at early stages of war, in Baghdad, Iraq, Saturday, April 9, 2011. As Iraq on Saturday marked the eighth anniversary of the fall of Baghdad to the US-led coalition, the UN envoy to Iraq has warned the country's leaders that they must address the legitimate demands of protesters for jobs, services and accountability. (AP Photo/Hadi Mizban)