The United Nations estimates 700,000 Iraqis have fled to Jordan -- more than one-tenth the entire kingdom's population. As many as 1 million more Iraqis are estimated to have sought refuge in Syria, about 120,000 are in Egypt and 40,000 in Lebanon, according to the United Nations. (Watch Iraqis tell their stories )

Inside Iraq, another 1 million to 2 million people have been forced out of their homes as a result of the violence, according to the United Nations. About 26 million people live in Iraq.