A top adviser to Defense Secretary Pete Hegseth was escorted out of the Pentagon on Tuesday after being identified during an investigation into leaks at the department.

One of U.S. Defense Secretary Pete Hegseth's leading advisers, Dan Caldwell, was escorted from the Pentagon on Tuesday after ...

Former U.S. National Security Advisor John Bolton says America risks getting caught in endless negotiations with Iran as Washington and Tehran meet in Oman.