Conservative commentator Erick Erickson wrote Tuesday he knows one of the Washington Post's sources that revealed President Trump discussed classified information with the Russians.

Erickson didn't reveal the name of the source in his post on The Resurgent, but said the source is solidly pro-Trump. But, because the president won't take any criticism, the source was forced to go to the media.

While the Post report was itself explosive, Erickson said there's more out there.

"I am told that what the president did is actually far worse than what is being reported," Erickson wrote. "The president does not seem to realize or appreciate that his bragging can undermine relationships with our allies and with human intelligence sources. He also does not seem to appreciate that his loose lips can get valuable assets in the field killed."

Erickson said he usually views stories like the Post's with skepticism, but knowing the source makes it more credible for him.

Aside from Trump's discussions with top Russian diplomats, there's a bigger issue at play, according to Erickson.

"The president will not take any internal criticism, no matter how politely it is given. He does not want advice, cannot be corrected, and is too insecure to see any constructive feedback as anything other than an attack," he wrote.

"So some of the sources are left with no other option but to go to the media, leak the story, and hope that the intense blowback gives the president a swift kick in the butt," he said. "Perhaps then he will recognize he screwed up. The president cares vastly more about what the press says than what his advisers say. That is a real problem and one his advisers are having to recognize and use, even if it causes messy stories to get outside the White House perimeter."