Nordlinger nails it in one paragraph:

Readers have asked me to comment on the State Department couple who spied for Castro’s Cuba for 30 years. I will, briefly. Let us be clear what they were doing: aiding a regime that denies people their fundamental rights and liberties; that imprisons people for dissent; that tortures them while they are in prison; that kills people who try to flee the island; that will allow no political pluralism; that squashes the very souls of people, like any other totalitarian state. We say that this couple “betrayed their country.” Sure. But they also betrayed Cubans and humanity at large.