ichi: //All they have is the Kerch bridge now.//
https://ibb.co/Yjk007M
Which isn't to be sniffed at, what with road & rail plus of course air, there isn't anything that can't be moved into Crimea, it is just as it was before with the Perekop Isthmus, the narrow strip of land to the north used previously:
I've answered your question about 2014 several times, 'illegal' yes, but from the Russian viewpoint, (& in the real world) eminently justifiable.
Now why not answer mine, repeat; "Tell me what right has America to demand that Putin 'returns' it to Ukraine ........... or else ? "