(FILES) This March 18, 2011 file photo shows top US commander in Afghanistan, US Army General David Petraeus, speaking during an event hosted by the National Journal at the Newseum in Washington, DC. In a major shakeup of President Barack Obama's nationalsecurity team, CIA director Leon Panetta will become the new Pentagon defense secretary this summer, replacing Robert Gates, who is stepping down a US official told AFP April 27, 2011. ABC and NBC television reported meanwhile that General David Petraeuswill replace Paneetta at the helm of the US spy agency. Photo: Mandel Ngan, AFP/Getty Images
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