Putting aside every instinct I have to join the choir voicing every issue I have with blaming the victim and cozying up to the agitator, or to challenge your charitable view of Trump's motivations...
I'm genuinely interested to hear your take on the likely and potential repercussions of rewarding Russia/Putin for their aggression. What makes you confident that they won't reasonably perceive this outcome as tacit permission to start coming for other territory?
Putin loves working off maps from the 1800s. Finland, for example, is a likely future target.
Not to be hyperbolic, but there's a good reason you aren't supposed to negotiate with terrorists.