Senior administration officials have struggled to explain why the publicly available app was used to discuss such a delicate ...

A magazine journalist’s account of being added to a group chat of U.S. national security officials coordinating plans for ...

The monumental slipup was a horrific omen for U.S. national security, whose weakest link is apparently a crew of Cabinet ...

Some of the nation's top intelligence officials will appear before Congress in a pair of hearings this week. Two were ...

Members of Congress are shocked and angry that sensitive attack plans against the Houthis were shared on a nonsecure network ...

A journalist’s account of being added to a group chat of U.S. national security officials coordinating plans for airstrikes ...

Michael Waltz, the national security adviser under fire after The Atlantic reported that he included its editor on a Signal ...

The White House has chosen retired submariner Brent Sadler to lead the U.S. Maritime Administration, according to a ...

"At this time, the message thread that was reported appears to be authentic, and we are reviewing how an inadvertent number ...

Whether on purpose or inadvertent, disclosures of classified or sensitive information can cost troops their careers.

The Trump NSC’s accidental leak to The Atlantic should force a rethink of the body’s role in crafting American foreign policy.

The Trump administration's top intelligence officials face Congress for back-to-back hearings this week to testify about the threats facing the United States and what the government is doing to ...