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

Senators questioned ex-Trump national security adviser Michael Waltz at confirmation hearing about a Signal chat that contained sensitive information.

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.

Mike Waltz, President Donald Trump’s nominee for U.S. ambassador to the United Nations, will face questioning from lawmakers ...

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 ...

President Trump's former national security adviser was pressed on the inclusion of a journalist on a sensitive group chat ...

Sen. Cory Booker attacked former national security advisor Mike Waltz for not taking greater accountability for his role in a Signal group chat used to discuss strikes against the Houthis.

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.

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

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