WASHINGTON, DC - APRIL 28: U.S. President Barack Obama (L) shakes hands with Marine Corps Gen. John Allen (2nd L) after Obama announced that he will nominate Allen to succeed Gen. David Petraeus with... more 
WASHINGTON, DC - APRIL 28: U.S. President Barack Obama (L) shakes hands with Marine Corps Gen. John Allen (2nd L) after Obama announced that he will nominate Allen to succeed Gen. David Petraeus with Secretary of Defense Robert Gates (2nd R) and CIA Director Leon Panetta in the East Room of the White House April 28, 2011 in Washington, DC. Obama has tapped current CIA Director Panetta to succeed Robert Gates as the next secretary of defense, Gen. Petraeus to be the next CIA director, Ryan Crocker to be the next U.S. ambassador to Afghanistan, and Gen. Allen to succeed Petraeus as commander of ISAF and U.S. forces in Afghanistan. (Photo by Chip Somodevilla/Getty Images) less 
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Getty Images | Photo By Chip Somodevilla / Getty Images
Thu, Apr 28, 2011 4:36 PM EDT