The former CIA contractor fled to Russia in 2013 after espionage charges were unveiled against him.

You can't visit the museum right now, so we're bringing the museum to you.

The administration argues that the use of Huawei’s 5G network could allow the Chinese government to conduct cyberespionage.

Is it a Russian spy? Is it a therapy animal? Is it just a runaway SeaWorld mammal finally free to take on the high seas?

An emotional and apologetic Butina said in court she is "truly sorry" and regrets not registering as a foreign agent.

Director Chris Weitz talked with us about "Operation Finale" and why its message resonates so intensely in 2018.

Trump brushed off criticism from retired Adm. McRaven on the lifting of security clearances of administration opponents.

Using algorithms to sort through massive amounts of info can take the burden off defense analysts, Lt. Gen. Ashley said.

In an op-ed, retired Adm. William McRaven tore into President Donald Trump over his feud with ex-CIA Director John Brennan.