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Secretary of Defense

James N. Mattis

James N. Mattis became the 26th defense secretary Jan. 20, 2017. During more than four decades in uniform, he commanded Marines at all levels, including in combat tours in Iraq and Afghanistan. Following his retirement from the U.S. Marine Corps in 2013, Secretary Mattis served as the Davies Family Distinguished Visiting Fellow at the Hoover Institution at Stanford University, specializing in the study of leadership, national security, strategy, innovation and the effective use of military force.

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Defense Secretary James N. Mattis welcomes Philippine National Defense Secretary Delfin Lorenzana during an honor cordon at the Pentagon, Sept. 18, 2018. DoD photo by Air Force Master Sgt. Angelita M. Lawrence
Mattis, Philippine Counterpart Discuss Defense Relationship Story | DoD News Now | Flickr Album
Defense Secretary James N. Mattis and Macedonian Defense Minister Radmila Shekerinska pass by military members in Skopje, Macedonia, during the secretary's welcome to the nation, Sept.17, 2018. Mattis made the trip to express U.S. support for Macedonia's Prespa Agreement with Greece and the country's invitation to join NATO. DoD photo
Mattis Praises Macedonia as ‘Stabilizing Force’ Story