US Democratic presidential candidate Senator Obama listens during a Senate Foreign Relations Committee hearing with US Commander in Iraq General Petraeus and Ambassador to Iraq Crocker in Washington

 
US Democratic presidential candidate Senator Obama listens during a Senate Foreign Relations Committee hearing with US Commander in Iraq General Petraeus and Ambassador to Iraq Crocker in Washington
US Democratic presidential candidate Senator Barack Obama (D-IL) listens during a Senate Foreign Relations Committee hearing with US Commander in Iraq General David Petraeus and Ambassador to Iraq Ryan Crocker on Capitol Hill in Washington April 8, 2008. REUTERS/Jonathan Ernst (UNITED STATES)