I love the example you gave because it is demonstrative of one of the most important distinctions between your moral language and the language of geopolitics. If a Muslim attacks someone in a western country, then they will have violated a law. The recipient of the violence is a victim of an infringement of rights garunteed by the government which has authority through the social contract. On the world stage, there is no higher authority, rights, or laws. What you have are a set of nations, which by definition, are agents seeking to secure prosperity for themselves. Ukraine has certain objectives to secure their prosperity like, procuring a large conventional military or nukes so that they can defend their borders. Russia also has certain objectives that secure their prosperity, like maintaining access to the black sea and building natural gas pipelines into Europe. When these nations have objectives that conflict there are only two options: compromise or war, that's it, that is the reality. In this case neither side wanted to compromise, so there was a war.

It's also important to note that this conflict is not one-sided. Ukraine has dedicedly become a proxy for US and European power projection. This is not a genocide or some other form of needless violence. This is a classic example of powers butting heads and all parties refusing to take de-escalatory actions.