DEFENSE DISCUSSIONS U.S. Defense Secretary Robert M. Gates, right, and U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, meet with Israeli Defense Minister Ehud Barak, left foreground, at the Pentagon, April 27, 2010. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 501661-M-TCY33-329.jpg Photo Gallery