Trump admin's Signal leak shows 'profound' risk of uncontrolled communications: former intelligence official

"I'm glad the operation was successful," Gordon said, referring to the U.S. military strikes on Houthi terrorist targets. "Now we need to deal with the fact that this should not have happened, there is consequence when it does and you can't be sure that there's no persistent risk that follows it."

Gordon said that while there have been errors in the past concerning the protection of a partner's information, this leak is different due to the Trump administration's reaction of "there was nothing to see here."

"I don't think we should rest on the fact that nothing bad happened this time," Gordon said. "We don't know whether that communications path has been penetrated, so we don't know whether state actors that have lots of resources are just sitting and lurking now knowing we do important things on [Signal]."

The Trump administration has maintained that no classified information was shared in the chat, doubling down on Wednesday that The Atlantic's story was a "hoax" after Goldberg published specific texts from the chat. 

Ret. Gen. Frank McKenzie, former CENTCOM commander, also appeared on the program Sunday, saying that while he was "surprised" at the communications leak, he believed the "larger story" was how the U.S. had "finally begun to strike the Houthis hard," at a speed "that, frankly, eluded the previous administration."

"I think we have the capability - actually, right now, in Iran's weakened state - to threaten them very strongly," the retired general said.

Fox News Digital's Emma Colton contributed to this report.