[4] During his time as a graduate student, Miller served in the naval reserve and was assigned to the Philadelphia-based destroyer USS Johnston (DD-821).
Immediately following graduation from the Woodrow Wilson School, Miller joined the U.S. Department of State as a political-military affairs officer, a post he held until the summer of 1979.
[6] Miller was promoted to the position of Deputy Assistant Secretary of Defense for Nuclear Forces and Arms Control Policy in the fall of 1989.
During the period September 1996 through January 2001 Miller served concurrently as chairman of NATO's nuclear policy committee, the "High Level Group" (HLG).
[7] Miller has argued that the President has almost single authority to initiate a nuclear attack since the Secretary of Defense is required to verify the order, but cannot legally veto it.
He also holds positions as a non-resident senior advisor at the Center for Strategic and International Studies (CSIS) and as a Director of the Atlantic Council of the United States.
[8][9] Wolfgang Ischinger and Ulrich Weisser supported the removal, arguing that it would be "a grave mistake" for NATO members "to cling to the Cold War perception of Russia as a potential aggressor.