In recent weeks, we’ve learned that Secretary of Defense Pete Hegseth shared sensitive details about U.S. military strikes in two separate Signal chats—one with senior national security officials and another with his wife,

Democrats in Congress feel they got their first scalp of the Trump administration on Thursday with the ouster of national security adviser Mike Waltz. Now, they're calling for more. Why it matters: Defense Secretary Pete Hegseth has been another top target for his role in Signalgate and for reports of chaos and mismanagement at the Pentagon.

Trump said that Secretary of State Marco Rubio would serve as interim national security advisor until a permanent replacement for Waltz is selected.