Overview
- Mike Waltz has left his role as National Security Adviser following fallout from a Signal messaging breach involving sensitive military plans.
- President Trump announced Waltz’s nomination as U.S. Ambassador to the United Nations, a position requiring Senate confirmation.
- Secretary of State Marco Rubio will temporarily serve as National Security Adviser, marking a dual role for the senior official.
- Deputy National Security Adviser Alex Wong is also departing, signaling broader changes within Trump’s national security team.
- The March Signal breach, which mistakenly included a journalist in discussions about Yemen airstrikes, prompted bipartisan criticism and ongoing investigations into operational security practices.