Trump undermined the fundamental concept of NATO by making it an explicit pay-for-play, left Ukraine without a US Ambassador from May 2019 until after the invasion, tied frozen military aid (which remained frozen for the rest of his term) to a quid pro quo response on a phone call he was impeached for, repeatedly over many years stroked Putin like one of his microphones, and then shattered the idea of a stable democracy capable of handling a peaceful transition of power.
History will, absolutely, bear out that Putin’s longstanding support for Trump always was a long game power play for Ukraine (and Georgia, and eventually Poland, Lithuania, Finland… there’s a lot of dominoes).
Trump made the post a partisan hot potato that was open to the highest bidder, it took the incoming administration a bit of deliberation to determine how to replace that shit show with someone both sides of a pretty evenly split Senate could approve of… I’m also not blaming Trump for anything that started under Obama’s watch and that he just inherited and didn’t act on immediately.
History will, absolutely, bear out that Putin’s longstanding support for Trump always was a long game power play for Ukraine (and Georgia, and eventually Poland, Lithuania, Finland… there’s a lot of dominoes).