https://www.vox.com/world/2018/9/12/17764132/trump-fbi-russia-new-york-times-craig-unger
One of the hardest things to accept about the Trump-Russia saga is how transparent it is. So much of the evidence is hiding in plain sight, and somehow that has made it harder to accept.
But make no mistake: Trump’s ties to shady Russian figures stretch back decades, and Unger diligently pieces them together in one place. Although Unger doesn’t provide any evidence that Trump gave the Russians anything concrete in return for their help, the case he makes for how much potential leverage the Russians had over Trump is pretty damning.
https://www.americanprogress.org/article/following-the-money/
https://www.theguardian.com/us-news/2024/apr/03/trump-media-es-family-trust-2022-loans
and let's keep in mind, Diddling underage girls was far from the only thing the trump and Epstein had in common.
Another mutual interest was money laundering.