Last week, Rubio made history again when Trump tapped him as national security adviser after former U.S. Rep. Mike Waltz, ...

Secretary of State Marco Rubio's new job as national security adviser sets the former Donald Trump rival up for a bigger role ...

There is a very real possibility that Trump keeps Marco Rubio as both secretary of state and national security adviser, ...

WH deputy chief of staff Stephen Miller dispelled rumors that President Trump is considering him to replace Mike Waltz as National Security Advisor. Miller suggested that Secretary of State Marco ...

Secretary Rubio’s new role as national security adviser may be unsustainable, according to foreign policy experts.

Secretary of State Marco Rubio’s new assignment as President Trump’s interim national security adviser brings him deeper into ...

Indian National Security Advisor Ajit Doval spoke with Rubio “shortly after the strikes” and briefed him on the actions taken ...

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

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

Former national security adviser John Bolton characterized Marco Rubio’s new dual role as secretary of state and national ...

Marco Rubio serving as both Secretary of State and national security adviser could be "ultimately disadvantageous" to President Trump, says former adviser John Bolton.