 From 1982 to 1984, he served as Political Officer at Monrovia in Liberia.He returned to Washington, D.C. to serve from 1985 to 1987 as Action Officer in the Office of Strategic Nuclear Policy, Bureau of Politico-Military Affairs.He was Chairman (1986–87) of the Interagency Nuclear Testing Arms Control Working Group and served on the U.S. Delegation to the Geneva Nuclear Testing talks.