According to Article 25 of the Charter of United Nations, members of the United Nations agree to accept and carry out the decisions of which of its organs in accordance with the present Charter:

I. Uti Possidetis	1. Principle in customary international law providing that where there has been a fundamental change of circumstances since an agreement was concluded, a party to that agreement may withdraw from or terminate it.
II. Pacta Sunt Servanda	2. Two or more states equally exercise sovereignty with respect to a territory and its inhabitants.
III. Condominium	3. Doctrine that territory remains with the possessor state at the end of war or occupation unless otherwise determined by a treaty or an agreement.
IV. Rebus Sic Stantibus	4. Proposition that treaties are binding upon the parties to them and must be performed in good faith.