alternative dispute resolution amendments to the united nations charter arbitration chapter iii of the united nations charter chapter ii of the united nations charter chapter iv of the united nations charter chapter ix of the united nations charter chapter i of the united nations charter chapter viii of the united nations charter chapter vii of the united nations charter chapter v of the united nations charter chapter xix of the united nations charter covenant of the league of nations history of the united nations international court of justice mediation military staff committee negotiation preamble to the united nations charter treaty of versailles united nations united nations charter united nations economic and social council united nations general assembly united nations secretariat united nations security council united nations trusteeship council united nations member states wikisource