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

State secrets are necessary, no matter who is president, because safeguarding certain kinds of information stops America’s ...

The president of the European Commission said that the bloc is “prepared to respond” with countermeasures to President Donald Trump’s tariffs but will attempt to negotiate with him first.

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

When the president talks about security in the Arctic, he’s talking about climate change.

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

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

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

How The Atlantic’s editor in chief found himself in a group chat with Trump-administration officials who were planning an ...

The unusual requests made of Interior Secretary Doug Burgum’s staff are raising concerns all the way to the White House.

The Signal security breach would be bad enough if those involved had not spent so much time criticizing Hillary Clinton for ...

This is an edition of The Atlantic Daily, a newsletter that ... with a list of people who should be removed from the National Security Council because of their disloyalty to Trump and the MAGA ...