What will the U.S. leave behind in Iraq?
Richard Engel, NBC News chief foreign correspondent, talks about how the U.S. went to war in Iraq and what will be left behind once U.S. troops are withdrawn at the end of the year.
Richard Engel, NBC News chief foreign correspondent, talks about how the U.S. went to war in Iraq and what will be left behind once U.S. troops are withdrawn at the end of the year.