I dont know 100% about this situation. But Russia caused much suffering. I hope things will get better there soon.
You are right about sufferings. Russian can't accept that we are a different country
I like Putin and Russia, But when it comes to Ukraine's sovereignty I have to respect their sovereignty too. Because tomorrow some other big country can do the same to another small neighbor country justifying their invasion. I think all these happened due to western factor. Then Ukraine became victim between 2 super powers. This is a pathetic situation. I heard so many people already have died from the war. And we can remember mistakenly one group attacked the Malaysian passenger airplane with a rocket. Tragedy continued..horrible.
Essentially what happened in Ukraine is a war between the two groups of Ukrainians (i.e the Western Ukrainians and the Eastern Ukrainians). It will be wrong to blame Putin for this. Obviously, he was supporting the Russian-speaking Eastern Ukrainians. But at the same time the Western Ukrainians were being supported by Angela Merkel and Donald Trump.