A declaration of war is a formal act by which one nation goes to war against another. A declaration is usually an act of delivering a performative speech (not to be confused with a mere speech) or the presentation of a signed document by an authorized party of a national government in order to create a state of war between two or more sovereign states. In the context of World War I, the official international protocol for declaring war was defined in the Hague Convention of 1907 (or Hague II). [1] For the diplomatic maneuvering behind these events, which led to hostilities between nations, see Diplomatic history of World War I.
Below is a table showing the outbreaks of wars between nations which occurred during World War I. Indicated are the dates (during the immediate build-up to, or during the course of, World War I) from which a de facto state of war existed between nations. The table shows both the initiator states and the state at which the declaration of war was aimed. Events listed include those in which there were a simple diplomatic breaking of relations that did not involve any physical attack, as well as those involving overt declarations or acts of aggression.
An armistice is a formal agreement of warring parties to stop fighting. It is not necessarily the end of a war, as it may constitute only a cessation of hostilities while an attempt is made to negotiate a lasting peace. It is derived from the Latin arma, meaning "arms" and -stitium, meaning "a stopping".
The law of war is a component of international law that regulates the conditions for initiating war and the conduct of hostilities. Laws of war define sovereignty and nationhood, states and territories, occupation, and other critical terms of law.
Non-combatant is a term of art in the law of war and international humanitarian law to refer to civilians who are not taking a direct part in hostilities; persons, such as combat medics and military chaplains, who are members of the belligerent armed forces but are protected because of their specific duties ; combatants who are placed hors de combat; and neutral persons, such as peacekeepers, who are not involved in fighting for one of the belligerents involved in a war. This particular status was first recognized under the Geneva Conventions with the First Geneva Convention of 1864.
A declaration of war is a formal act by which one state announces existing or impending war activity against another. The declaration is a performative speech act by an authorized party of a national government, in order to create a state of war between two or more states.
The Hague Conventions of 1899 and 1907 are a series of international treaties and declarations negotiated at two international peace conferences at The Hague in the Netherlands. Along with the Geneva Conventions, the Hague Conventions were among the first formal statements of the laws of war and war crimes in the body of secular international law. A third conference was planned for 1914 and later rescheduled for 1915, but it did not take place because of the start of World War I.
A declaration of war is a formal declaration issued by a national government indicating that a state of war exists between that nation and another. A document by the Federation of American Scientists gives an extensive listing and summary of statutes which are automatically engaged upon the United States declaring war.
The Paris Declaration respecting Maritime Law of 16 April 1856 was an international multilateral treaty agreed to by the warring parties in the Crimean War gathered at the Congress at Paris after the peace treaty of Paris had been signed in March 1856. As an important juridical novelty in international law the treaty for the first time created the possibility for nations that were not involved in the establishment of the agreement and did not sign, to become a party by acceding the declaration afterwards. So did altogether 55 nations, which otherwise would have been impossible in such a short period. This represented a large step in the globalisation of international law.
The Allies, formally referred to as the United Nations from 1942, were an international military coalition formed during World War II (1939–1945) to oppose the Axis powers. Its principal members by the end of 1941 were the "Big Four" – the United Kingdom, United States, Soviet Union, and China.
The Hague Convention for the Protection of Cultural Property in the Event of Armed Conflict is the first international treaty that focuses exclusively on the protection of cultural property in armed conflict. It was signed at The Hague, Netherlands, on 14 May 1954 and entered into force on 7 August 1956. As of July 2021, it has been ratified by 133 states.
The Geneva Convention on Prisoners of War was signed at Geneva, July 27, 1929. Its official name is the Convention relative to the Treatment of Prisoners of War. It entered into force 19 June 1931. It is this version of the Geneva Conventions which covered the treatment of prisoners of war during World War II. It is the predecessor of the Third Geneva Convention signed in 1949.
The neutral powers were countries that remained neutral during World War II. Some of these countries had large colonies abroad or had great economic power. Spain had just been through its civil war, which ended on 1 April 1939 —a war that involved several countries that subsequently participated in World War II.
The government of the United Kingdom declared war on the Empire of Japan on 8 December 1941, following the Japanese attacks on British Malaya, Singapore, and Hong Kong on the previous day as well as in response to the bombing of the US fleet at Pearl Harbor.
Air warfare must comply with laws and customs of war, including international humanitarian law by protecting the victims of the conflict and refraining from attacks on protected persons.
A peace congress, in international relations, has at times been defined in a way that would distinguish it from a peace conference, as an ambitious forum to carry out dispute resolution in international affairs, and prevent wars. This idea was widely promoted during the nineteenth century, anticipating the international bodies that would be set up in the twentieth century with comparable aims.
The Geneva Conventions are international humanitarian laws consisting of four treaties and three additional protocols that establish international legal standards for humanitarian treatment in war. The singular term Geneva Convention colloquially denotes the agreements of 1949, negotiated in the aftermath of the Second World War (1939–1945), which updated the terms of the two 1929 treaties and added two new conventions. The Geneva Conventions extensively define the basic rights of wartime prisoners, civilians and military personnel; establish protections for the wounded and sick; and provide protections for the civilians in and around a war-zone.
On December 8, 1941, at 12:30 PM ET the United States Congress declared war, on the Empire of Japan in response to its surprise attack on Pearl Harbor and subsequent declaration of war the prior day. The Joint Resolution Declaring that a state of war exists between the Imperial Government of Japan and the Government and the people of the United States and making provisions to prosecute the same was formulated an hour after the Infamy Speech of President Franklin D. Roosevelt. Following the U.S. declaration, Japan's allies, Germany and Italy, declared war on the United States, bringing the United States fully into World War II. The Japanese government had originally intended to deliver their own declaration of war thirty minutes before the attack, but the Japanese embassy in Washington took too long to decode the 5,000-word document.
This is a timeline of declarations of war during World War II.
On 11 December 1941, four days after the Japanese attack on Pearl Harbor and the United States declaration of war against Imperial Japan, Nazi Germany declared war against the United States, in response to what was claimed to be a "series of provocations" by the United States government when the U.S. was still officially neutral during World War II. The decision to declare war was made by Adolf Hitler, following two days of consultation. It has been referred to as Hitler's "most puzzling" decision of World War II. Publicly, the formal declaration was made to American Chargé d'Affaires Leland B. Morris by German Foreign Minister Joachim von Ribbentrop in the latter's office. Later that day, the U.S. declared war on Germany, with Germany's action having eliminated any remaining meaningful domestic isolationist opposition to the U.S. joining the European war.
On 3 September 1939, the United Kingdom declared war on Germany—two days after the German invasion of Poland. France also declared war on Germany later the same day.