During that time, he also served as the United States commissioner to the Bilateral Consultative Commission of the New START Treaty, and as the United States special representative for Biological Weapons Convention (BWC) issues.

Wood was the deputy spokesperson and deputy assistant secretary of state in the Bureau of Public Affairs in the Department of State, and an information officer at U.S. Embassy in Berlin, Germany.

Wood was also deputy director of communications and spokesperson at the U.S. Mission to the United Nations in New York City.

On December 15, 2021, President Joe Biden nominated Wood to be the alternate representative of the United States of America for special political affairs in the United Nations, with the rank of ambassador.

[1] Hearings on his nomination were held before the Senate Foreign Relations Committee on June 23, 2022.