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From Wikipedia: The right of people to self-determination is a cardinal principle in modern international law (commonly regarded as a jus cogens rule), binding, as such, on the United Nations as authoritative interpretation of the Charter's norms. It states that a people, based on respect for the principle of equal rights and fair equality of opportunity, have the right to freely choose their sovereignty and international political status with no interference. ... self-determination entails the "moral double helix" of duality (personal right to align with a people, and the people's right to determine their politics) and mutuality (the right is as much the other's as the self’s). Thus, self-determination grants individuals the right to form "a people," which then has the right to establish an independent state, as long as they grant the same to all other individuals and peoples.