U.S. DEPARTMENT OF DEFENSE News Spotlights About Panetta speaks at 5th annual Dean Acheson Lecture U.S. Department of Defense sent this bulletin at 06/29/2012 03:04 PM EDT Panetta speaks at 5th annual Dean Acheson Lecture 06/29/2012 11:47 AM CDT Secretary of Defense Leon Panetta delivers remarks at the fifth annual Dean Acheson Lecture on "The Practice of Partnership in the 21st Century" at the US Institute of Peace in Washington, DC.