LEAVENWORTH SPEECH Defense Secretary Robert M. Gates speaks to students at the U.S. Army Command and General Staff College at Fort Leavenworth, Kan., May 7, 2010. He told students differences between conventional and irregular warfare are becoming "less relevant in the real world." SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 602624-S-ALK60-842.jpg Photo Gallery