The lawmakers used Waltz's nomination hearing for U.N. ambassador to resurrect criticisms of the handling of sensitive Signal chats.

National security adviser Mike Waltz was nominated as United Nations ambassador after he mistakenly added a journalist to a ...

Waltz is a former Green Beret and Florida representative who resigned from Congress to join the Trump administration. He served as national security adviser for roughly three months. Trump reshuffled ...

After messages from Mike Waltz's leaked chat on the Signal app went massively public months ago, he was ousted as President Donald Trump's top national security adviser. Now, he's up for a new ...

NSA Mike Waltz was nominated as UN ambassador after he mistakenly added a journalist to a Signal chat discussing military ...

Then-National Security Advisor Mike Waltz, left, and Secretary of Defense Pete Hegseth speak as President Donald Trump meets French President Emmanuel Macron at the White House in Washington, D.C ...

Jan 14, 2025; Washington, DC, USA; Incoming National Security Advisor Michael Waltz (L) delivers remarks during a Senate Armed Services committee hearing on the expected nomination of Pete Hegseth ...

White House National Security Adviser Mike Waltz listens to a question from a reporter in the James Brady Press Briefing Room at the White House in Washington, Feb. 20, 2025.

White House National Security Adviser Mike Waltz listens to a question from a reporter in the James Brady Press Briefing Room at the White House in Washington, Feb. 20, 2025.

Mike Waltz, President Trump's former national security adviser, is testifying before the Senate Foreign Relations Committee as he vies to become the U.S. ambassador to the United Nations.