The departure of National Security Adviser Mike Waltz spotlights foreign policy tensions inside the Trump administration.

Former national security adviser Michael Waltz in the Cabinet Room of the White House in March. Shawn Thew / EPA / Bloomberg ...

Waltz was at the center of the Signal chat controversy, in which a journalist was accidentally included in a discussion of ...

The ousted national security adviser will be nominated for U.N. ambassador, a less influential post, after his ...

The fired national security adviser engaged in intense coordination with Israeli Prime Minister Benjamin Netanyahu about ...

Waltz’s ouster on Thursday was cushioned by his appointment as President Donald Trump’s ambassador to the United Nations.

Signalgate was the national security adviser’s most glaring mistake. But his problems ran deeper. After Michael Waltz, the ...

This is the first significant personnel overhaul of top White House aides, and the kind of shake-up President Trump has ...

National security adviser Mike Waltz is out, with Secretary of State Marco Rubio replacing him on an interim basis. President ...

President Donald Trump has named Mike Waltz as his next nominee for the U.S. ambassador to the UN after ousting him as his ...

Mike Waltz, President Trump's national security advisor, is leaving the White House weeks after he accidentally added a journalist to a Signal chat.

The national security adviser infamously added The Atlantic's Jeffrey Goldberg to a Signal group chat discussing Yemen attack ...