My brother has a coworker who has a Ukrainian wife. Her family reported bodies of Russian soldiers in the streets. I didn’t get where or when. I certainly can’t verify this. Just passing it along.
Probably, just outside the Ukrainian border. Just like there are many Russians who live in Ukraine, there are many Ukrainians living in RF.
Remember, in soviet times it wasn’t really a border. People in the Russian south did not think of national identification much. For most it hinged on which language they felt more fluent at, and of course everyone spoke both Russian and Ukrainian passably well.