Secretary of State Marco Rubio has been thrown into two top national security roles at once after President Donald Trump appointed him to temporarily replace Mike Waltz as national security adviser.

Marco Rubio, one of Donald Trump's closest associates, currently holds four key positions in the US administration. A White House official told Axios that Marco has a good relationship with the president,

There is a very real possibility that Trump keeps Marco Rubio as both secretary of state and national security adviser, according to three people familiar with the matter.