The president said Secretary of State Marco Rubio will serve simultaneously as acting national security adviser while ...

Secretary of State Marco Rubio has been thrown into two top national security roles at once after President Donald Trump ...

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

Former National Security Advisor John Bolton went off on President Donald Trump's friend and special envoy as "a disaster in the making" who "doesn't know anything" about the things he is in charge of ...

In March, the editor of the Atlantic magazine revealed that national security adviser Michael Waltz had inadvertently ...

President Donald Trump has ousted National Security Adviser Mike Waltz and announced that he will nominate him as the next ...

President Donald Trump is forging ahead with his domestic and foreign policy agenda as he pushes for trade deals. Follow for ...

Former national security adviser Mike Waltz was photographed using a Signal-like messaging app during Wednesday’s Cabinet ...

With Rubio's appointment as interim national security adviser, Trump has now consolidated two of the most important roles in ...

Trump adviser Mike Waltz using a modified Signal app called TM SGNL during a cabinet meeting. The app allows message ...

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