A magazine journalist's account of being added to a group chat of U.S. national security officials coordinating plans for airstrikes has raised questions about how highly sensitive information is ...

The messaging app Signal that Trump administration officials used to discuss an attack on Yemen’s Houthi rebels was created ...

A messaging app called Signal was recently the preferred communications platform for top officials in the Trump administration to discuss war plans.

Because Signal uses end-to-end encryption, experts agree it is more secure than conventional texting - but it could be hacked ...

The nation’s top intelligence officials are expected to appear before a Senate committee, a day after a report emerged that Trump administration officials discussed Yemen strikes in an unclassified ...

The lack of public contrition, let alone resignations, from top officials, reflects a White House that operates in a culture ...