I want whatever solution causes the least amount of human suffering.
But don't you think a diplomatic solution that consists of Ukraine conceding territory to Russia would just make Putin come back for more? It's exactly what happened before.
Beautifully described in your first sentence.
For the second part, that’s slippery surface indeed. I guess that the only way avoiding that is continuing the build up of our armies (both European and Ukrainian) if a diplomatic solution has been found. If anything an agreement shouldn’t fully be fully trusted as history has learned us.
I think that the context matters here. If we’re going to a Ukrainian victory within (let’s say) the next year then okay, go ahead. If we’re looking to a long war, almost a Iraq or Afghanistan situation, than I’d rather avoid it.