Do not confuse with Clarke, Richard A. who writes books for children [LCCN: n 2008037559]

His U.S. sale of Abrams tanks to Saudi Arabia, 1989: t.p. (Richard A. Clarke, Assistant Secretary for Politico-Military Affairs, U.S. Dept. of State, Washington, D.C.)

The scorpion's gate, c2005: CIP t.p. (Richard A. Clarke) data sheet (noted counterterrorism expert; fiction debut)

Biog. resource center (Contemp. authors, 2008), June 2, 2008 (Richard A. Clarke; b. 1950, Dorchester, Mass.; Massachusetts Institute of Technology, M.S., 1978; national security adviser, security consultant, writer, and television commentator); Biog. resource center (Contemp. authors, 2004) (Richard A. Clarke; b. 1951, Dorchester, Mass.)

Wikipedia, June 2, 2008 (Richard A. Clarke; Richard Alan Clarke; b. 1951)