General Stanley McChrystal, chairman of Siemens Government Technologies Inc., sits for a photograph prior to a Bloomberg Television interview in Washington, D.C., U.S., on Tuesday, July 9, 2013. McChrystal, former commander of U.S. and NATO forces in Afghanistan, talked about the relationship between the U.S. and Afghanistan and the outlook for the full withdrawal of U.S. forces from Afghanistan. Photographer: Andrew Harrer/Bloomberg via Getty Images