So, about that Signal chat. On Monday, shortly after we published a story about a massive Trump-administration security breach, a reporter asked the secretary of defense, Pete Hegseth, why he had ...

The Atlantic on Wednesday published a transcript of text messages showing that Defense Secretary Pete Hegseth detailed U.S. military attack plans in Yemen in a Signal group chat that inadvertently ...

Former national security adviser Mike Waltz defended his use of the encrypted Signal app during a Senate confirmation hearings Tuesday on his nomination as President Trump's ambassador to the U.N.