During Mr. Trump’s first term, senior members of his national security team, including Gen. Mark A. Milley, the chairman of the Joint Chiefs of Staff, far left, and John R. Bolton, the national ...

Just over 24 hours after President Donald Trump announced Secretary of State Marco Rubio would be taking on yet another role as interim national security adviser, the White House is actively ...

President Trump on Thursday removed his national security adviser, Michael Waltz, and nominated him as ambassador to the United Nations, the first significant personnel overhaul of top White House ...

The national security adviser seemed at a loss. It fell to Michael Waltz to explain to handpicked members of his staff this month why the president had ordered their dismissal after a meeting with ...

Americans are trying to absorb President Trump’s tariff assault on world trade, so few may notice this week’s White House firings at the National Security Council.

National security adviser Mike Waltz is leaving his White House post, although soon after reports about his departure were published, President Trump announced he plans to nominate him to be ...