A high-powered delegation of US officials will spend Friday at a remote military base on Greenland in what is being viewed as ...

President Donald Trump expressed frustration with national security adviser Michael Waltz Thursday in his conversations with ...

President Donald Trump withdrew Rep. Elise Stefanik's nomination for United Nations ambassador because House Republicans need ...

As senior officials deny wrongdoing, rank-and-file national-security personnel warn of a damaging double standard.

Atlantic editor-in-chief Jeffrey Goldberg spoke with a reporter from a sister station about the Signal chat situation.

President Trump is privately angry with national security adviser Mike Waltz for mistakenly including a journalist in an ...

Israel provided the US with critical intelligence from an on-the-ground source in Yemen that was later leaked as part of the ...

The White House on Wednesday continued to downplay and deflect criticism over a Signal group chat among top Trump ...

A federal judge has ordered the Trump administration to preserve all Signal communications related to recent U.S. military strikes on Houthi rebels in Yemen.

A federal judge says he will order the Trump administration to preserve records of a text message chat in which senior ...

The first round in the legal battle over leaked Signal chat messages about the U.S. attack on Houthi rebels fizzled Thursday ...

Our top leaders should not be discussing what is clearly sensitive — likely classified information — on unsanctioned ...