88In that regard, it should be noted, first of all, that the customary principle of self-determination referred to in particular in Article 1 of the Charter of the United Nations is, as the International Court of Justice stated in paragraphs 54 to 56 of its Advisory Opinion on Western Sahara, a principle of international law applicable to all non-self-governing territories and to all peoples who have not yet achieved independence. It is, moreover, a legally enforceable right erga omnes and one of the essential principles of international law (East Timor, (Portugal v Australia), judgment, ICJ Reports 1995, p. 90, paragraph 29 and the case-law cited).
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