The Atlantic magazine revealed an extraordinary national security blunder in the United States. Top US government officials ...

He recommended moving sensitive discussions away from commercial messaging platforms such as Signal and back to secure military communication ... the leak’s potential impact on intelligence ...

Senior National Security Correspondent Courtney Kube reports who was on the high-level Signal group chat that shared military ...

But his views on using U.S. military force and clues about the kind of advice he might give Trump behind closed doors were revealed in the Signal text message chain among senior administration ...

NPR's Scott Simon talks to Steven Cash, former CIA officer and staff member on the Senate Intelligence Committee, about the fallout from the security breach involving defense plans and a group chat.

A journalist was accidentally added to the Signal chat group discussing U.S. military attack plans on Houthi targets in Yemen. In the aftermath of that leak, revealed by Jeffrey Goldberg of The ...