U.S. President Barack Obama walks from the podium after announcing the withdrawal of U.S. troops from Iraq by the end of the year Iraqinews October 21, 2011 153 1 min U.S. President Barack Obama walks from the podium after announcing the withdrawal of U.S. troops from Iraq by the end of the year in the briefing room of the White House in Washington on October 21, 2011. REUTERS/Joshua Roberts U.S. President Barack Obama walks from the podium after announcing the withdrawal of U.S. troops from Iraq by the end of the year in the briefing room of the White House in Washington on October 21, 2011. REUTERS/Joshua Roberts