Power in the hands of aggressive, expansionist, totalitarian communists. Bad. Very Bad.
The Mohammedan totalitarian ideology is not worse than the Marxist totalitarian ideology.
The Cold War was not a 'fantasy'.
The Peoples' Republic of China is not our friend. Neither is the Democratic Peoples' Republic of Korea, or the Islamic Republic of Iran. I mention those three because they are in cahoots with each other against us.
Murderous totalitarian thugs with nuclear weapons are all bad, regardless of what totalitarian ideology they use.