I strongly agree with you that war is not solution of any problem but further aggravates the situation. This war has already created economic problems all over the over the world, fuel $ prices are sky high, inflation is historically high and developing countries like Srilanka are defaulting and many more will fall in the same crisis if this war is not stopped. If Russia is not not using its full force or deadly weapons , it means Putin doesn't want massive killing of human in its neighborhood.
The reality is that armed conflicts regularly occur in the world. War means not being able to solve the problem through diplomacy, but that doesn't mean that war doesn't solve anything. As an extreme method, force pressure can be very effective. And in the context of the financial crisis provoked by the pandemic and extensive quantitative easing programs, war is a good method of solving economic problems. The policy of pacifism and non-resistance to evil in practice only leads to the prosperity of evil. I'm sorry when innocent people die and suffer, life is sometimes very unfair. But there are things that cannot be tolerated and there are things that are worth dying for - even if these things are not physically things.