John Solomon: Next declassification could flip Russia collusion script

"The new evidence would complement a revelation last week that the primary source for the Christopher Steele anti-Trump dossier was known to the U.S. government to be tied to Russia intelligence, raising the possibility that the Russians were undercutting the GOP nominee."

https://justthenews.com/accountability/russia-and-ukraine-scandals/next-declassification-could-flip-russia-collusion

So we found out last week that the dossier's primary sub source was previously being investigated as a Russian asset.

Could this tie in with Brennan's secret trip to Moscow in March 2016?

https://www.themoscowtimes.com/2016/03/28/cia-director-brennan-made-secret-trip-to-moscow-a52284

There was also a rumor that Brennan visited Ukraine in 2016, possibly using a fake passport. Has this been verified?