By defending their borders and pushing out the people that have been mining towns and farms of civilians for months? Mines which will kill for decades to come? Do you think letting the Russians have the country would reduce civilian deaths? How would the Russian government treat the civilians of Ukrainian or the soldiers that fought against Putin?
Weapons of war are the ONLY solution when you're being invaded by a hostile foreign power. It's great that you're a peaceful person, but some realities cannot be ignored.