President-elect Donald Trump tapped Waltz, a Florida congressman and the first Green Beret to serve in Congress, to be his national security adviser in the upcoming administration. This was Waltz’s first television appearance since being picked, though Waltz is currently the member of Congress with the most appearances on Fox News.

The former Green Beret and three-term congressman from Florida has established himself as a hawkish Republican voice on matters of national security.

President-elect Donald Trump has asked U.S. Rep. Michael Waltz, a retired Army National Guard officer and war veteran, to be his national security adviser, a person familiar with the matter says.

U.S. President-elect Donald Trump's nominee for national security adviser, Mike Waltz, said on Nov. 24 that escalation between Russia and Ukraine must come to a "responsible end." Waltz, like Trump, has expressed skepticism about ongoing U.

Trump's top security advisor called for an end to the escalation of the war between Ukraine and Russia, and for both parties to come to the negotiating table.