What Zelensky did was despicable. It is he who made the grave error. Trump was on the cusp of bringing Putin to the negotiation table. Zelensky messed it up....real bad. This war isn't on Trump, the recent killing isn't either. The death and destruction lies squarely on the warmongers, Zelensky and his kin. Now certain Euro nations wish to expand their nukes, what a GREAT idea that is!
I'll say it again, and it's my point of view, any discussion of this war that doesn't consider NATO expansion eastward, and it's effect in the minds of the Russians, Putin included, fails to see the whole picture, is narrow in scope.
Not one European leader, not Biden, none of 'em sought to bring Putin to the table. Failure to do so has led to the continuation of this war. Business as usual is not what Trump is interested in. No way. No how.