He's bringing the idea that our allies assisted with the treason to the forefront. It's a necessary step, declass is less important then the set up for it. We're dealing with war, terror, and massive ramifications.
It's not something I'd tolerate being rushed. I just want everything to eventually come out. even if it's slowly. Ask yourself, will Trump hold onto a magic bullet and risk midterms, which would put at risk his chance of ever declassifying. I don't think so.