Just remember that in WW2 over 20 million Russian lives...

Just remember that in WW2 over 20 million Russian lives including military and civilian were lost to fight off the German invasion. They won that conflict and have long memories. They see any border as a line of defence and history shows a long vested interest in the Black Sea by all the surrounding countries. The Ukraine conflict is a modern example of control of the region. See how easily Ukraine supporters crow about destroying Russian shipping in the region.