It is a great pity, that people of this cities do not understand that Russia would never accept them as it happened with Crimea.
Too early to say that.
Most of the people there already possess the Russian citizenship, or are planning to do so in the near future. So the Russian government is legally bound to look after the requests from them.
And you know that from?
Wikipedia or Russia today? Have you flown to Ukraine these days and talk to the people about this?
Or can you read minds lately?