Elbridge Colby

Elbridge Andrew Colby is an American national security policy professional who is the under secretary of defense for policy since April 9, 2025. He previously served as deputy assistant secretary of defense for strategy and force development from 2017 to 2018 during the first Trump administration. He played a key role in the development of the 2018 U.S. National Defense Strategy, which, among other things, shifted the U.S. Defense Department's focus to China. He is also the grandson of former CIA director William Colby.