Make sure you base your decision on who has caused more damage to the world, who the world can live without, who the world has less use for.
Since Russia basically funded the Vietnam War and are the reason Taliban and other terrorist have so many weapons I will choose Communist. Not too mention because of them America built soo many Nuclear Warheads. I know they are not Communist anymore, but neither is Germany under Nazi power anymore. I still included Nazis. Not to forget about North Korea's recent crazy! China has not been to great in the past and now either.