The newly appointed interim national security adviser is preparing to stay in that role for up to six months, a person close ...

Waltz was among high-ranking members of the administration who accidentally shared plans about a forthcoming U.S. military ...

With four hats, including national security adviser, the former Trump rival is defying predictions he’d be a weak player.

In a dramatic shift in fortunes, Rubio is the first person since Henry Kissinger to be both secretary of state and national ...

The New York Times reports Secretary of State Marco Rubio is now interim national security adviser to President Donald Trump, ...

In a sweltering Rose Garden on Thursday, as President Donald Trump intoned at length about restoring faith to the White House ...

U.S. President Donald Trump ousted his national security adviser Mike Waltz on Thursday and named Secretary of State Marco ...

After the removal of Mike Waltz as national security adviser, Marco Rubio now has four different roles in Donald Trump's ...

Trump said he's nominating Michael Waltz to be ambassador to the United Nations, while Secretary of State Marco Rubio will ...

Donald Trump named Secretary of State Marco Rubio interim national security adviser and announced he will nominate Mike Waltz ...

Marco Rubio, the US secretary of state, will step in as Donald Trump's national security adviser on an interim basis.