The Department of Defense (DOD) provides the military forces needed to deter war, and to protect the security of the United States.

Apr 30, 2026 · Our mission is to provide the military forces needed to deter war and ensure our nation's security.

Defense News is a global website and magazine about the politics, business and technology of defense, serving senior military and industry decision-makers.

Within the Department of Defense are three subordinate military departments: the Department of the Army, the Department of the Navy, and the Department of the Air Force.

3 days ago · The U.S. Department of Defense is an executive division of the U.S. federal government responsible for ensuring national security and supervising U.S. military forces. Based in the …

1 day ago · BlackSky Technology has secured a nearly $30-million, one-year contract from an international defense customer for space-based ISR services. Irish liquid cooling developer Nexalus …

2 days ago · The meaning of DEFENCE is chiefly British spellings of defense.

1 day ago · Breaking defense news, military tech, and global security developments shaping today’s battlefield. Russia claims it has doubled combat aircraft production since the start of the war in …

Inside Defense, from the award-winning Inside the Pentagon family of newsletters, is the nation's best online news service for defense and aerospace professionals. We specialize in exclusive, hard …

Defense news stories, video and regulations The latest in politics and policy. Direct to your inbox. Sign up for the Defense & National Security newsletter