Ukraine’s troops are right now asserting their sovereignty. Lots of dead Russians can attest to Ukrainian sovereignty.
So you’re thinking Russia’s air superiority just couldn’t compete with the untrained citizens to whom were given weapons to fight the Russians, right? You completely buy the idea that Ukraine is kicking Russia’s back side while British and American mercenaries, and others, are reporting that there weren’t enough guns and those who got them were given no more then 10 rounds, and deserters trying to escape the Ukraine are stopped, their papers torn up, and told to go back and fight.