The firings encompassed four staffers who were fired overnight, after the meeting, and two who were removed over the weekend. It created the extraordinary situation where Loomer appeared to have more influence than the national security adviser, Mike Waltz, over the NSC and undercut Waltz in having aides axed under him.

Loomer brought a booklet of papers laying out the perceived disloyalty of about a dozen staffers, including Waltz’s principal deputy, Alex Wong, to the meeting, which was also attended by JD Vance, the chief of staff Susie Wiles, the commerce secretary Howard Lutnick and Waltz himself.

The fired officials included Brian Walsh, the senior director for intelligence who previously worked for now secretary of state Marco Rubio on the Senate intelligence committee; Thomas Boodry, the senior director for legislative affairs who previously served as Waltz’s legislative director in Congress; and Maggie Dougherty, the senior director for international organizations, the people said.