Questions over President Donald Trump's connections to Russian President Vladimir Putin followed him into his first presidency and hung over him for most of his term.

The second administration of President Donald Trump has continued its efforts to remake the federal government and implement ...

Russia has intensified cyber operations against Ukraine and NATO countries, according to previous U.S. intelligence and ...

The defense secretary is said to have halted operations against Russia as part of a reset in ties between Washington and Moscow.

Foreign adversaries including Russia and China have recently directed their intelligence services to ramp up recruiting of US ...

Officials confirmed that the N.S.A. managed a system that had been used for sexually explicit chats and L.G.B.T.Q.

The president also says he’ll be signing a pact with Ukraine giving Washington access to critical rare earth minerals as ...

Oak Ridge National Laboratory has a rich tradition of artificial intelligence (AI) research dating back more ... and energy efficient AI in the service of scientific research and national security.

North Korea appears to have sent more troops to Russia despite its soldiers suffering heavy casualties fighting on the front ...

Chuck Sams, the first Native American parks director in U.S. history, discusses the role of public lands in American life, the importance of Indigenous knowledge in stewardship and the consequences of ...

DHS, ODNI and NORTHCOM — powerful organizations established in the wake of 9/11 — continue to be topics of debate and subject to change two decades later.