Richard K. Betts. Statement and testimony in U.S. Senate Select Committee on Intelligence, Hearing: Renewal and Reform: U.S. Intelligence in a Changing World, 104th Cong., 1st and 2d sess., 1996. 

Statement and testimony in U.S. Senate Select Committee on Intelligence, Hearing: Renewal and Reform: U.S. Intelligence in a Changing World, 104th Cong., 1st and 2d sess., 1996.