Observe how many people evade, rationalize and drive their minds into a state of blind stupor, in dread of discovering that those they deal with- their "loved ones" or friends or business associates or political rulers- are not merely mistaken, but evil. Observe that this dread leads them to sanction, to help and to spread the very evil whose existence they fear to acknowledge.
Ayn RandDictatorship nations are outlaws. Any free nation had the right to invade Nazi Germany and, today, has the right to invade Soviet Russia, Cuba, or any other slave pen. Whether a free nation chooses to do so or not is a matter of its own self-interest, not of respect for the nonexistent 'rights' of gang rulers. It is not a free nation's duty to liberate other nations at the price of self-sacrifice, but a free nation has the right to do it, when and if it so chooses.
Ayn Rand