Sir Hersch Lauterpacht (1897–1960) has been generally acknowledged as one of the most distinguished and influential international lawyers of the twentieth century. This is the final volume of his collected papers systematically arranged. It covers disputes, war and neutrality and comprises such subjects as the settlement of disputes and the structure, jurisdiction and operation of the International Court of Justice, including the important Provisional Report of 1955 on the revision of the Statute of the Court. The Part on the Renunciation of Force includes the previously unpublished draft of a Peace Act (1934) and the Part on the Law of War is introduced by an extended editorial note describing Lauterpacht’s significant contribution to the Law of War, particularly in relation to the prosecution of war criminals. The Part on Neutrality contains important and hitherto unpublished memoranda prepared for the United States Government on US neutrality during World War II.