In addition, the Europeans have stepped up to fund the war, and the Ukrainians showed themselves to be resilient and have caused real damage to both the Russian army and the Russian economy, the latter by droning Russia's oil infrastructure.
I still think if Trump is serious about ending the war he needs to do two things: i) up the pain on Russia (the sanctions may help); ii) offer a settlement plan that gives Putin enough to back down and Ukraine realistic security arrangements to guarantee it won't be attacked again.
Ukraine has its President Zelensky. The European Union is a union of 27 nations, each with its head of state, a Prime Minister, President or other officer, and the European Commission which sits atop the EU has its President of the European Commission, Ursula von der Leyen, and the current President of the European Council, António Costa.
Why then are all the media, the headlines and opinion pages (and your statement above) all intent on making President Trump the responsible party for "ending the war."
Given the EU is at least 100 million more in population than the US and, of course, nearer to the war, why is not some one (or more) of these dignitaries leading, and "serious about ending the war," rather than passing the buck onto President Trump?