 Afterwards, as a political officer at the American Embassy in Moscow, he was responsible for covering Soviet relations towards Europe (in particular the collapse of the Warsaw Pact and the Two Plus Four Agreement on German unification), arms control issues (the Treaty on Conventional Armed Forces in Europe), and the new USSR Supreme Soviet Defense and State Security Committee.He worked directly with Chairman Les Aspin (D-Wisconsin) and House Committee on Armed Services members to instruct their Supreme Soviet counterparts on how to perform legislative oversight.In 1991-92, he was an American Political Science Association Congressional Fellow, working with Senator Carl Levin (D-Michigan) on nuclear weapons issues.