U.S. national-security leaders included me in a group chat about upcoming military strikes in Yemen. I didn’t think it could ...

The administration has downplayed the importance of the text messages inadvertently sent to The Atlantic’s editor in chief.

The White House’s strategy to deal with the fallout over a Signal app security breach is a familiar one: Blame the media.

Jeffrey Goldberg, the editor of The Atlantic, said he was mistakenly added to a group chat with U.S. national security ...