Iraqi Civil War

Following the U.S.-launched 2003 invasion of Iraq, the situation deteriorated, and by 2007, the conflict between Iraqi Sunni and Shi'a factions was described by the National Intelligence Estimate as having elements of a civil war. This violence is splitting Baghdad into sectarian enclaves, and shaking the confidence of all Iraqis.
In October 2006, the UNHCR and the Iraqi government estimated that more than 365,000 Iraqis had been displaced since the 2006 bombing of the al-Askari Mosque, bringing the total number of Iraqi refugees to more than 1.6 million. By 2008, the UNHCR raised the estimate of refugees to a total of about 4.7 million (~16% of the population). In 2007, Iraq's anti-corruption board reported that 35% of Iraqi children, or about five million children, were orphans. More than 250,000 civilians killed.. - Wikipedia