A combination photo shows CIA Director David Petraeus speaking on Capitol Hill in Washington on January 31, 2012 and U.S. Marine Corps Lt. Gen. John Allen arriving to testify on Capitol Hill in Washington June 28, 2011. The top U.S. commander in Afghanistan, General John Allen, is under investigation for alleged inappropriate communication with a woman at the center of the scandal involving former CIA Director David Petraeus, a senior U.S. defense official said on November 13, 2012. REUTERS/Kevin Lamarque/Yuri Gripas/Files
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