Officials inadvertently added a reporter to an unsecured group chat discussing plans for a U.S. attack on Houthis in Yemen.

The defense secretary sent information about an attack in Yemen to a Signal group chat that included his wife and brother ...

As the White House faces criticism over the blunder, questions remain about how such a mistake occurred—and whether it could happen again.

He shared details of a March attack in a message group that included his wife, brother and personal lawyer, a source familiar ...

"I'm a journalist ... what Goldberg characterized as a war plan. The message included a "sequencing of events related to an upcoming attack on Yemen" and promised results by 1:45 p.m. Eastern ...

The White House said Monday a Signal group chat discussing a U.S. attack on Houthis in Yemen that inadvertently included ... coordinated highly sensitive war plans on the unsecure group chat ...