Joaquin Castro, D-Texas, points to a chart displaying a text message by Defense Secretary Pete Hegseth in a group chat that revealed U.S. military plans in Yemen to a journalist, at a House ...

Trump officials on Tuesday described the leak of a high-level discussion about attacks on Houthi rebels in Yemen as a “mistake” but said the president’s critics were blowing the incident out ...

The use of civilian software to discuss sensitive military and government matters came to light after a journalist from The Atlantic magazine said he was mistakenly added to a group chat on Signal.