Sen. Tammy Duckworth (D-IL) confirmed Sunday she would not support Mike Waltz in a Senate vote determining whether he will be President Donald Trump’s next ambassador to the United Nations. Waltz served as Trump’s national security adviser until Thursday,

Democratic Sen. Tammy Duckworth of Illinois, who is on the Senate Armed Forces Committee, tells "Face the Nation with Margaret Brennan" that Mike Waltz, who resigned as national security adviser last week but has been tapped by President Trump to be U.

Sen. Mark Warner (D-Va.) predicts that former national security adviser Mike Waltz will face a “brutal” confirmation hearing as he was removed from his post and nominated to be the Trump administration’s United Nations ambassador.

You can't run anything, much less the United States is a national security policy without having people who are willing to put uncomfortable truths in front of the president,” the Connecticut Democrat said.

Retired Lt. Gen. H.R. McMaster, a CBS News contributor who served as national security adviser in President Trump's first term, tells "Face the Nation with Margaret Brennan" that this week's removal of Mike Waltz as national security adviser will be "significant" for U.

National security adviser Mike Waltz is leaving his White House post, although soon after reports about his departure were published, President Trump announced he plans to nominate him to be ambassador to the United Nations.

Fox News contributors Ben Domenech and Leslie Marshall discuss Mike Waltz being moved from his position as national security advisor to United Nations ambassador on 'MediaBuzz.'

The fired national security adviser engaged in intense coordination with Israeli Prime Minister Benjamin Netanyahu about military options against Iran ahead of an Oval Office meeting between the Israeli leader and Trump,

It wasn’t just Signalgate that led to Mike Waltz being canned as President Donald Trump‘s national security adviser. Before that scandal, Waltz had already angered Trump by going behind his back to talk with Israeli Prime Minister Benjamin Netanyahu about waging war on Iran,