National Security Advisor to the President of the USA, Mike Waltz, allegedly conducted business discussions using a private Gmail account. This incident marks another controversy involving Trump's advisor,

The Atlantic published a story detailing how editor in chief Jeffrey Goldberg had been inadvertently added to a Signal group chat of Trump-administration officials discussing attack plans on Houthi targets in Yemen.

Secretary of Defense Pete Hegseth returned from a trip overseas as more criticism emerges regarding his involvement in the Signal group texts plaguing the Trump administration. CBS News' Ellee Watson has more as reports arise about Hegseth's wife taking part in some of his meetings.

For Trump Administration leaders to use the Signal app for sensitive U.S. national security purposes is nothing new—it’s a trick that predates even the Biden crew, who probably think “encrypted messaging” is just a fancy way to sext without getting caught.

In the wide-ranging NBC News interview, the president also said that a military option for annexing Greenland was not off the table.

The fallout from the Trump administration's Signal scandal continues, with some European allies wondering if the U.S. can still be trusted with classified information. Elizabeth Palmer reports.

The White House said Monday that its probe into how a journalist was added to a group chat of officials discussing military strikes is closed, as the administration seeks to move past the controversy.

The White House has closed its review of national security adviser including a journalist on a group chat about airstrikes in Yemen, press secretary Karoline Leavitt said Monday — as looming tariffs already are tamping down focus on the controversy.