The League of Nations was the first worldwide intergovernmental organisation whose principal mission was to maintain world peace. It was founded on 10 January 1920 by the Paris Peace Conference that ended the First World War. The main organisation ceased operations on 18 April 1946 when many of its components were relocated into the new United Nations. As the template for modern global governance, the League profoundly shaped the modern world.
The Treaty of Versailles was a peace treaty signed on 28 June 1919. As the most important treaty of World War I, it ended the state of war between Germany and most of the Allied Powers. It was signed in the Palace of Versailles, exactly five years after the assassination of Archduke Franz Ferdinand, which led to the war. The other Central Powers on the German side signed separate treaties. Although the armistice of 11 November 1918 ended the actual fighting, and agreed certain principles and conditions including the payment of reparations, it took six months of Allied negotiations at the Paris Peace Conference to conclude the peace treaty. Germany was not allowed to participate in the negotiations before signing the treaty.
Arms control is a term for international restrictions upon the development, production, stockpiling, proliferation and usage of small arms, conventional weapons, and weapons of mass destruction. Historically, arms control may apply to melee weapons before the invention of firearm. Arms control is typically exercised through the use of diplomacy which seeks to impose such limitations upon consenting participants through international treaties and agreements, although it may also comprise efforts by a nation or group of nations to enforce limitations upon a non-consenting country.
The Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or other Gases, and of Bacteriological Methods of Warfare, usually called the Geneva Protocol, is a treaty prohibiting the use of chemical and biological weapons in international armed conflicts. It was signed at Geneva on 17 June 1925 and entered into force on 8 February 1928. It was registered in League of Nations Treaty Series on 7 September 1929. The Geneva Protocol is a protocol to the Convention for the Supervision of the International Trade in Arms and Ammunition and in Implements of War signed on the same date, and followed the Hague Conventions of 1899 and 1907.
Disarmament is the act of reducing, limiting, or abolishing weapons. Disarmament generally refers to a country's military or specific type of weaponry. Disarmament is often taken to mean total elimination of weapons of mass destruction, such as nuclear arms. General and Complete Disarmament was defined by the United Nations General Assembly as the elimination of all WMD, coupled with the “balanced reduction of armed forces and conventional armaments, based on the principle of undiminished security of the parties with a view to promoting or enhancing stability at a lower military level, taking into account the need of all States to protect their security.”
The Locarno Treaties were seven post-World War I agreements negotiated between Germany, France, Great Britain, Belgium, Italy, Poland and Czechoslovakia in late 1925. In the main treaty, the five western European nations pledged to guarantee the inviolability of the borders between Germany and France and Germany and Belgium as defined in the Treaty of Versailles. They also promised to observe the demilitarized zone of the German Rhineland and to resolve differences peacefully under the auspices of the League of Nations. In the additional arbitration treaties with Poland and Czechoslovakia, Germany agreed to the peaceful settlement of disputes, but there was notably no guarantee of its eastern border, leaving the path open for Germany to attempt to revise the Versailles Treaty and regain territory it had lost in the east under its terms.
Edgar Algernon Robert Gascoyne-Cecil, 1st Viscount Cecil of Chelwood,, known as Lord Robert Cecil from 1868 to 1923, was a British lawyer, politician and diplomat. He was one of the architects of the League of Nations and a defender of it, whose service to the organisation saw him awarded the Nobel Peace Prize in 1937.
The events preceding World War II in Europe are closely tied to the bellicosity of Fascist Italy, Nazi Germany, Francoist Spain, Imperial Japan, and the Soviet Union, as well as the Great Depression. The peace movement led to appeasement and disarmament.
The Washington Naval Conference was a disarmament conference called by the United States and held in Washington, D.C., from November 12, 1921, to February 6, 1922. It was conducted outside the auspices of the League of Nations. It was attended by nine nations regarding interests in the Pacific Ocean and East Asia. Germany was not invited to the conference, as restrictions on its navy had already been set in the Versailles Treaty. Soviet Russia was also not invited to the conference. It was the first arms control conference in history, and is still studied by political scientists as a model for a successful disarmament movement.
The causes of World War II have been given considerable attention by historians. The immediate precipitating event was the invasion of Poland by Nazi Germany on September 1, 1939, and the subsequent declarations of war on Germany made by Britain and France, but many other prior events have been suggested as ultimate causes. Primary themes in historical analysis of the war's origins include the political takeover of Germany in 1933 by Adolf Hitler and the Nazi Party; Japanese militarism against China, which led to the Japanese invasion of Manchuria and the Second Sino-Japanese War; Italian aggression against Ethiopia, which led to the Second Italo-Ethiopian War; Soviet Union desire to reconquer old territory of Russian Empire, which led to the Soviet invasion of Poland, the Soviet occupation of Bessarabia and Northern Bukovina, the occupation of the Baltic states and the Winter War.
The Anglo-German Naval Agreement (AGNA) of 18 June 1935 was a naval agreement between the United Kingdom and Germany regulating the size of the Kriegsmarine in relation to the Royal Navy.
Brigadier-General John Hartman Morgan was a British lawyer with expertise in constitutional law. He lectured and wrote on the topic, and he also joined military service during World War I.
British re-armament was a period in British history, between 1934 and 1939, when a substantial programme of re-arming the United Kingdom was undertaken. Re-armament was deemed necessary, because defence spending had gone down from £766 million in 1919–20, to £189 million in 1921–22, to £102 million in 1932.
German rearmament was a policy and practice of rearmament carried out by Germany from 1918 to 1939, in violation of the Treaty of Versailles which required German disarmament after WWI to prevent it from starting another war. It began on a small, secret, and informal basis shortly after the treaty was signed, but was openly and massively expanded after the Nazi Party came to power in 1933.
The League of Nations was established with three main constitutional organs: the Assembly; the Council; the Permanent Secretariat. The two essential wings of the League were the Permanent Court of International Justice and the International Labour Organization.
International relations (1919–1939) covers the main interactions shaping world history in this era, known as the interwar period, with emphasis on diplomacy and economic relations. The coverage here follows the diplomatic history of World War I and precedes the diplomatic history of World War II. The important stages of interwar diplomacy and international relations included resolutions of wartime issues, such as reparations owed by Germany and boundaries; American involvement in European finances and disarmament projects; the expectations and failures of the League of Nations; the relationships of the new countries to the old; the distrustful relations between the Soviet Union and the capitalist world; peace and disarmament efforts; responses to the Great Depression starting in 1929; the collapse of world trade; the collapse of democratic regimes one by one; the growth of economic autarky; Japanese aggressiveness toward China; fascist diplomacy, including the aggressive moves by Fascist Italy and Nazi Germany; the Spanish Civil War; the appeasement of Germany's expansionist moves toward the Rhineland, Austria, and Czechoslovakia, and the last, desperate stages of rearmament as another world war increasingly loomed.
The disarmament of Germany after World War I was decided upon by Allied leadership at the Paris Peace Conference. It was viewed, at the time, as a way to prevent further conflict with Germany and as punishment for Germany's role in World War I. The reduction of Germany's significant manufacturing capacity was one of the goals.
The United Kingdom and the League of Nations played central roles in the diplomatic history of the interwar period 1920-1939 and the search for peace. British activists and political leaders helped plan and found the League of Nations, provided much of the staff leadership, and Britain played a central role in most of the critical issues facing the League. The League of Nations Union was an important private organization that promoted the League in Britain. By 1924 the League was broadly popular and was featured in election campaigns. The Liberals were most supportive; the Conservatives least so. From 1931 onward, major aggressions by Japan, Italy, Spain and Germany effectively ruined the League in British eyes.
The 1923 Draft Treaty of Mutual Assistance was an unsuccessful proposal made by the League of Nations to address the issue of disarmament and security in Europe after World War I. It was rejected by the British government in 1924 and was never adopted.
France and the League of Nations was a major theme of French foreign policy in the 1920s and 1930s. France and the United Kingdom were the two dominant players in world affairs and in League affairs, and usually were in agreement. The League proved ineffective in resolving major problems. In 1945 it was replaced with the United Nations, where France played a major role despite its much weaker status. However in the 1920s and 1930s the main themes of French foreign policy focused on defense against Germany, and took place outside of League jurisdiction.
