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

As senior officials deny wrongdoing, rank-and-file national-security personnel worry about the dangers if no one is held ...

The president’s officials must know that what they did in the Signal group chat was wrong—and dangerous.

The president is privately upset with the sloppiness of his advisers. Publicly, he’s focused on attacking the press.

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

This is an edition of The Atlantic Daily, a newsletter that guides ... National Security Advisor Jake Sullivan sent Top Secret messages to Hillary Clinton’s private account.

Trump officials have repeatedly downplayed the messages, claiming no classified information was shared in the chat that ...

The information Defense Secretary Pete Hegseth disclosed in the Signal chat of top Trump national security officials was ...

I also could not believe that the national security adviser to the president would be so reckless as to include the editor in chief of The Atlantic ... a.m., a message landed in my Signal app ...