Residents looks at the scene of a roadside bomb that destroyed a U.S. military Humvee in central Baghdad July 11, 2007. Casualty figures were not immediately available.  REUTERS/Thaier al-Sudani (IRAQ)
RM2D1PRF7Residents looks at the scene of a roadside bomb that destroyed a U.S. military Humvee in central Baghdad July 11, 2007. Casualty figures were not immediately available. REUTERS/Thaier al-Sudani (IRAQ)
A resident looks at the scene of a roadside bomb that destroyed a U.S. military Humvee in central Baghdad July 11, 2007. Casualty figures were not immediately available.  REUTERS/Thaier al-Sudani (IRAQ)
RM2D1C5Y0A resident looks at the scene of a roadside bomb that destroyed a U.S. military Humvee in central Baghdad July 11, 2007. Casualty figures were not immediately available. REUTERS/Thaier al-Sudani (IRAQ)
A resident looks at the scene of a roadside bomb that destroyed a U.S. military Humvee in central Baghdad July 11, 2007. Casualty figures were not immediately available.  REUTERS/Thaier al-Sudani (IRAQ)
RM2D1FKMNA resident looks at the scene of a roadside bomb that destroyed a U.S. military Humvee in central Baghdad July 11, 2007. Casualty figures were not immediately available. REUTERS/Thaier al-Sudani (IRAQ)
An Iraqi National Guardsman attends the scene where a U.S. Marines Humvee vehicle was destroyed by a bomb in Baghdad June 29, 2004. The roadside bomb blast killed an unknown number of U.S. Marines in Baghdad on Tuesday in the first reported fatal attack on U.S. forces in Iraq since the formal handover of sovereignty to an interim government. REUTERS/Thaier Al-Sudani  CLH/CRB
RM2D4A41XAn Iraqi National Guardsman attends the scene where a U.S. Marines Humvee vehicle was destroyed by a bomb in Baghdad June 29, 2004. The roadside bomb blast killed an unknown number of U.S. Marines in Baghdad on Tuesday in the first reported fatal attack on U.S. forces in Iraq since the formal handover of sovereignty to an interim government. REUTERS/Thaier Al-Sudani CLH/CRB