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WASHINGTON, DC - JUNE 28: United States Marine Corps Lieutenant General John Allen prepares to testify before the Senate Armed Services Committee on Capitol Hill June 28, 2011 in Washington, DC. Allen has been nominated by U.S. U.S. President Barack Obama to replace Gen. David Petraeus as the commander of International Security Assistance Force (ISAF) and U.S. forces in Afghanistan. (Photo by Chip Somodevilla/Getty Images)
WASHINGTON, DC - JUNE 28: United States Marine Corps Lieutenant General John Allen prepares to testify before the Senate Armed Services Committee on Capitol Hill June 28, 2011 in Washington, DC. Allen has been nominated by U.S. U.S. President Barack Obama to replace Gen. David Petraeus as the commander of International Security Assistance Force (ISAF) and U.S. forces in Afghanistan. (Photo by Chip Somodevilla/Getty Images)

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