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

Dozens of White House National Security Council staffers were fired Friday as part of a “total overhaul” being conducted by ...

The ousted national security adviser will be nominated for U.N. ambassador, a less influential post, after his ...

The Trump administration is overhauling the National Security Council after it announced former National Security Advisor ...

Secretary of State Marco Rubio is taking over for Michael Waltz as National Security Adviser, but Rubio is keeping his main job and other roles. During his first term in office, President Trump ...

President Trump said Thursday he is removing Mike Waltz from his role as national security adviser and in the interim replacing him with Secretary of State Marco Rubio. Trump said he's nominating ...

Secretary of State Marco Rubio has been thrown into two top national security jobs at once as President Donald Trump presses forward with his top-to-bottom revamp of U.S. foreign policy, upending not ...

Donald Trump appointed Mike Waltz to be the next U.S. ambassador to the United Nations after stripping him of his original ...

Marco Rubio will be the first person since Henry Kissinger in the 1970s to hold the positions of secretary of state and national security adviser simultaneously.

Days after former National Security Adviser Mike Waltz was caught using a knock-off Signal app, a hacker broke into the ...

The president did not elaborate on why he was sidelining Waltz, who struggled to gain the confidence of White House staffers.