This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
... has no right to violate them. Therefore, the invasion of an enslaved country is morally justified only when and if the conquerors establish a free social system, that is, a system based on the
recognition of individual rights.
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Since there is no fully free country today, since the so-called “Free World” consists of various “mixed economies,” it might be asked whet
her every country on earth is morally open to invasion by every other. The answer is: No. There is a difference between a country that recognizes the principle of individual rights, but does not...