MCCHRYSTAL RESIGNATION President Barack Obama announces that he has accepted the resignation of Army Gen. Stanley A. McChrystal from his post as the top NATO and U.S. commander in Afghanistan and that he is nominating Army Gen. David H. Petraeus, commander of U.S. Central Command, second right, to replace him, White House Rose Garden, June 23, 2010. Joining the president are Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, far left, Vice President Joe Biden, second left, and Defense Secretary Robert M. Ga SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 800657-C-KTY41-615.jpg Photo Gallery