Mark Esper

Mark Esper is an American politician and former military officer who served as the 27th United States Secretary of Defense from July 2019 to November 2020 under President Donald Trump. Before his appointment, he held various roles in the defense sector, including as Secretary of the Army. Esper is a graduate of the U.S. Military Academy at West Point and holds advanced degrees in public administration and business. His tenure as Secretary of Defense involved significant issues such as military readiness, defense spending, and relations with international allies, particularly in the context of emerging threats and global security.