From North America to Europe to Asia, different countries are responding to the second Trump administration in different ways ...

China is pursuing nuclear modernization and expansion. What does its nuclear force look like, and how is it shaping its nuclear doctrine?

From military supply chains to wounded allies, experts say the new U.S. tariffs may bring national security risks.

Experts are divided on whether a military approach can make a difference in handling the narco-trafficking threat.

The Trump administration appears willing to look beyond an arrest that has galvanized the opposition in Turkey ...

The abrupt firing or reassignment of top NSA leadership could destabilize U.S. national security according to experts ...

OPINION — President Ronald Reagan believed in the power of communication. He aimed to inform a global audience about American values and find ways to provide truthful information and analysis to those ...

Cipher Brief experts take a new look at an unseen ‘war’ being waged – after two months of the Trump administration.

CIA veteran Joseph Augustyn reviews James C. Lawler's book The Traitor’s Tale: A Novel of Treachery Within the CIA.

Foreign aid has been dismissed as soft-hearted waste, but it has always been used to build American influence and security.

Canada is a longtime U.S. ally, its U.S.’s second-largest trading partner and a fellow NATO member, but relations between the two countries have [...] More ...

A breakdown of why the Trump administration is interested in Greenland and what the Greenlanders have to say about it.