An image of the Signal app is shown on a mobile phone in San Francisco, March 18. LONDON — A magazine journalist's account of being added to a group chat of U.S. national security officials ...

A lawsuit over the Trump administration’s infamous Houthi Signal group chat has revealed what steps departments took to ...

Dan Caldwell, a senior adviser to Pete Hegseth, has been placed on administrative leave as part of a leak investigation, a ...