Waltz is expected to face questions for the first time about his role in a Signal chat in which top officials inadvertently disclosed sensitive details about a military strike.

Mike Waltz, former national security adviser who left in the wake of the Signal chat controversy, faces a confirmation hearing for United Nations ambassador.

Democrats will likely zero in on Mike Waltz's involvement setting up a Signal group chat to discuss plans about strikes ...

To appreciate the dramatic shift in President Donald Trump’s policy towards Ukraine, consider two scenes in the Oval Office, ...

The former Trump national security adviser will be peppered with questions about Signal in his confirmation hearing for ...

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

Secretary of State Marco Rubio is taking over for Michael Waltz as National Security Adviser, but Rubio is keeping his main job and other roles.