Encyclopedia of Public International Law, 4: Use of Force, War, and Neutrality Peace Treaties (N-Z) focuses on hostile inter-State relations and associated questions, as well as the use of force, war, neutrality, and peace treaties. The publication first elaborates on warships, wars of national liberation, war materials, laws of war, war correspondent, war and environment, Versailles Peace Treaty (1919), use of force, United Nations peacekeeping system, United Nations forces, and unfriendly act. The text then ponders on trading with the enemy, suspension of hostilities, surrender, submarine warfare, sequestration, self-preservation, self-defense, sea warfare, safety zones, safe-conduct and safe passage, resistance movements, requisitions, and reparations after World War II. The book examines relief actions, recognition of insurgency and belligerency, prisoners of war, threat to peace, peace treaties, means to safeguard peace, pacifism, occupation after armistice, nuclear tests, non-aggression pacts, and neutrality in air warfare, land warfare, and sea warfare. The text is a vital source of information for researchers interested in the use of force, war, and neutrality peace treaties.