The president says Waltz, who started the leaked Signal chat, will be nominated as US ambassador to the UN and be temporarily replaced by Secretary of State Marco Rubio.

President Donald Trump is replacing his National Security Adviser, Mike Waltz, and nominating him to be Ambassador to the ...

Fox News Digital took a look at whom President Donald Trump could select to replace former national security advisor Mike Waltz.

Mike Waltz had faced criticism for mistakenly adding a journalist to a chat group where sensitive military plans were discussed.

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 ...

Trump said that Waltz "has learned a lesson and is a good man." President Donald Trump said he is confident in his national security adviser, Mike Waltz -- a day after a report detailed how he ...

President Donald Trump and Secretary of State Marco Rubio are spearheading plans to overhaul the National Security Council ...

The staff sent home included both career officials who were detailed to the NSC, as well as some political appointees.

At the National Security Council, top officials focused on Israel and the Middle East were pushed out last month as President Donald Trump seeks to centralize foreign policy decision-making in the Ova ...

Dozens of employees were reportedly relieved from their positions with the National Security Council, with an eye towards ...