Mike Waltz, President Donald Trump's nominee for U.S. ambassador to the United Nations, appeared before the Senate Foreign ...

Waltz repeated past denials that he did not commit any wrongdoing when he inadvertently added a journalist to a Signal app group chat earlier this year.

Democrats will likely zero in on Mike Waltz's involvement setting up a Signal group chat to discuss plans about strikes against the Houthis during his confirmation hearing for U.N. ambassador.

Former national security adviser Mike Waltz defended his use of the messaging app Signal during a confirmation hearing Tuesday during which lawmakers largely avoided the topic.

Mike Waltz, Trump's former national security adviser, faced questions from Democrats on the Signal chat controversy Tuesday ...

Mike Waltz is facing questioning from lawmakers for the first time since he was ousted as national security adviser.

Vice President JD Vance joined President Donald Trump's third campaign for president as his running mate one year ago.

Trump's threat against Russia runs parallel to a Senate-led effort to pass crippling sanctions on countries that buy Russian ...

US allies in Europe are worried that American support for Ukraine is fickle, and that the Trump administration will cut its troop posture on the continent.

Sen. Tim Scott (R-S.C.) rejected concerns that President Trump is going “too easy” on Russian President Vladimir Putin, as ...

The US president says he is "disappointed" in Putin and will be sending "top-of-the-line" weapons to Ukraine, via Nato.

The latest steps reflect an evolving approach from the U.S. president, who promised to swiftly resolve the war that began ...