Overview

• National Security Advisor Mike Waltz and his deputy Alex Wong are leaving their White House roles after a Signal group chat mishap involving sensitive military discussions.
• President Trump announced Waltz's nomination as U.S. Ambassador to the United Nations, pending Senate confirmation, with Marco Rubio temporarily assuming Waltz's former role.
• The Signal chat, created by Waltz, mistakenly included journalist Jeffrey Goldberg, who published details of the discussions, raising operational security concerns.
• The White House has denied that the group chat contained classified information, though the incident has drawn bipartisan criticism over the use of unsecured platforms for sensitive communications.
• This marks the first high-profile departure in Trump's second term, reflecting his administration's swift personnel changes and emphasis on loyalty.