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MSNBC's Joe Scarborough put pressure on Sen. Tom Cotton (R-AR) to hold Donald Trump officials accountable for a stunning security breach at the highest levels of government.

The Atlantic's Jeffrey Goldberg revealed that he was added to a group chat by National Security Adviser Mike Waltz in which Defense Secretary Pete Hegseth disclosed top-secret war plans two hours before U.S. troops conducted a bombing raid in Yemen. The "Morning Joe" host lambasted the administration for incompetence.

MSNBC's Joe Scarborough and Mika Brzezinski tag-teamed against the Donald Trump officials who looped a reporter into an unsecured group chat to discuss top-secret war plans.

National security adviser Mike Waltz added The Atlantic's editor in chief Jeffrey Goldberg to an encrypted Signal chat in which defense secretary Pete Hegseth disclosed war plans two hours before U.S. troops launched attacks against the Houthi militia in Yemen, the White House confirmed.

A CNN panel on Tuesday examined how President Donald Trump and his administration have created an atmosphere of fear and paranoia throughout the federal workforce.

In particular, host Audie Cornish pointed to new reporting about how federal employees no longer communicate with one another candidly through their work computers — and instead rely on encrypted messaging apps.

MSNBC's Jonathan Lemire reported that President Donald Trump is taking a wait-and-see approach to the explosive report about his national security team conducting war plans over a group chat that included a reporter.

National security adviser Michael Waltz added The Atlantic's editor-in-chief Jeffrey Goldberg to an encrypted group chat, apparently by mistake, on the Signal app in which Defense Secretary Pete Hegseth shared top-secret plans for attacks against the Houthi militia in Yemen, which happened two hours later.

MSNBC’s Rachel Maddow kicked off her Monday evening show by highlighting the growing wave of protests unfolding across the country — a development she identified as “qualitatively different than what we had previously seen.”

And that includes at Tesla showrooms, which Maddow flagged as coming despite the Trump administration vowing to drop the hammer on protesters of the Elon Musk-owned electric car company.

The Atlantic’s editor-in-chief, Jeffrey Goldberg, hit back at Defense Secretary Pete Hegseth moments after the Pentagon chief vigorously denied ever sharing top secret war plans via a Signal group chat that included the journalist.

“The whole thing is just a very flummoxing to me because I haven't seen this kind of unserious behavior before,” Goldberg told MSNBC’s Jen Psaki in some of his first public comments after he stunned Capitol Hill when he broke his story Monday.

Defense Secretary Pete Hegseth responded to the bombshell story that he accidentally shared highly classified defense plans with a reporter by slamming the journalist as "deceitful." But the Trump administration has a far bigger problem on its hands than that, Sen. Mark Kelly (D-AZ) told CNN's Anderson Cooper on Monday evening.

For starters, he said, the mere fact this kind of information was being sent over a Signal group chat is astonishing: "I don't know anybody on the Intelligence Committee here that I serve on that would have done anything close to this kind of conversation."

Secretary of Defense Pete Hegseth has no one to blame but himself for the serious leak of highly classified military information, Sen. Ruben Gallego (D-AZ) said on CNN's "OutFront" — and he has to acknowledge the buck stops with him.

The Trump White House was plunged into turmoil and finger-pointing on Monday after it was revealed that Hegseth disclosed specific plans detailing where and how the U.S. could initiate and attack in a group chat on Signal that included not only a number of national security officials who should know better, but a reporter as well.

Far-right legal activist Mike Davis told Steve Bannon on his "War Room" show that Republican lawmakers need to start threatening judges who block President Donald Trump from carrying out his policies.

"It's really important that the House and Senate step up and rein in these activist judges who are sabotaging the president's Article II executive powers," said Davis, a former law clerk for now-Supreme Court Justice Neil Gorsuch. "They think they're the last line of resistance because they lost the election."

Sen. Jim Banks (R-IN) sparked a round of criticism in his home district after he skipped a town hall and instead sent a staffer to deliver donuts – a stunt which further generated backlash when the MAGA lawmaker posted a video seeming to mock the snubbed attendees.

And Banks doubled down on social media.

President Donald Trump's obsession with acquiring Greenland from Denmark appears to be blowing up in his face, The New York Times reported on Monday.

"His decision, announced this weekend, to send a high-powered U.S. delegation to the island, apparently uninvited, is already backfiring," wrote Jeffrey Gettleman and Maya Tekeli. "The administration tried to present it as a friendly trip, saying that Usha Vance, the wife of Vice President JD Vance, would attend a dogsled race this week with one of their sons and that Michael Waltz, the national security adviser, would tour an American military base."

A combination of “sloppiness” and reckless disregard for the law led to the “emergency” situation created by Secretary of Defense Pete Hegseth sharing top-secret war plans in a Signal chat with other high-level Trump administration officials – and a reporter.

That’s according to Rep Jamie Raskin (D-MD), who made clear during a CNN interview hours after the bombshell report emerged that the development involving highly sensitive information being discussed freely via a messaging app violated the law.

Fox News host Will Cain, a former colleague of Defense Secretary Pete Hegseth's "Fox & Friends" days, praised Trump administration officials after a journalist from The Atlantic accidentally received secret war plans against Yemen.

"If it was accidental, and we'll wait to see if this was accidental, it is incredibly concerning that this information would be shared over the Signal app with the journalist included," Cain acknowledged on his Monday show. "But the bigger takeaway for me is it's an insight, a transparent insight into the thought process and dialogue of our national leaders."