Re: Eastern Ukraine, Russia's claims of self defense are obviously bullshit. If they were remotely true, they wouldn't be taking troops away from NATO borders to fight in Ukraine You can no more arbitrarily claim you're concerned about an invasion than I can shoot you for arbitrarily claiming you are a threat to me.
Which NATO borders has Russia weakened? How is it hard to grasp that encircling a country with members of a hostile military alliance will be seen as a critical threat? Key reason for the conflict was the real prospect of Ukraine joining NATO, which was a stated red line for Russia.