Franco-Russian Alliance in the context of "Triple Alliance (1882)"

World War I, or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a global conflict between two coalitions: the Allies (or Entente) and the Central Powers. Major areas of conflict included Europe and the Middle East, as well as parts of Africa and the Asia-Pacific. The war saw important developments in weaponry including tanks, aircraft, artillery, machine guns, and chemical weapons. One of the deadliest conflicts in history, it resulted in an estimated 30 million military casualties, and 8 million civilian deaths from war-related causes and genocide. The movement of large numbers of people was a major factor in the deadly Spanish flu pandemic.

The causes of World War I included the rise of the German Empire and decline of the Ottoman Empire, which disturbed the long-standing balance of power in Europe, the exacerbation of imperial rivalries, and an arms race between the great powers. Growing tensions in the Balkans reached a breaking point on 28 June 1914 when Gavrilo Princip, a Bosnian Serb, assassinated Franz Ferdinand, the heir to the Austro-Hungarian throne. Austria-Hungary blamed Serbia, and declared war on 28 July. After Russia mobilised in Serbia's defence, Germany declared war on Russia and France, who had an alliance. The United Kingdom entered the war after Germany invaded Belgium, and the Ottoman Empire joined the Central Powers in November. Germany's strategy in 1914 was to quickly defeat France before transferring its forces to the east, but its advance was halted in September, and by the end of the year the Western Front consisted of a near-continuous line of trenches from the English Channel to Switzerland. The Eastern Front was more dynamic, but neither side gained a decisive advantage, despite costly offensives. Italy, Bulgaria, Romania, Greece and others entered the war from 1915 onward.

The July Crisis was a series of interrelated diplomatic and military escalations among the major powers of Europe in mid-1914, which led to the outbreak of World War I. It began on 28 June 1914 when the Bosnian Serb nationalist Gavrilo Princip assassinated Archduke Franz Ferdinand, heir presumptive to the Austro-Hungarian throne, and his wife Sophie, Duchess of Hohenberg. A complex web of alliances, coupled with the miscalculations of numerous political and military leaders (who either regarded war as in their best interests, or felt that a general war would not occur), resulted in an outbreak of hostilities amongst most of the major European states by early August 1914.

Following the murder, Austria-Hungary sought to inflict a military blow on Serbia, to demonstrate its own strength and to dampen Serbian support for Yugoslav nationalism, viewing it as a threat to the unity of its multi-national empire. However, Vienna, wary of the reaction of Russia (a major supporter of Serbia), sought a guarantee from its ally, Germany, that Berlin would support Austria in any conflict. Germany guaranteed its support through what came to be known as the "blank cheque", but urged Austria-Hungary to attack quickly to localise the war and avoid drawing in Russia. However, Austro-Hungarian leaders would deliberate into mid-July before deciding to give Serbia a harsh ultimatum, and would not attack without a full mobilisation of the army. In the meantime, France met with Russia, reaffirmed their alliance, and agreed they would support Serbia against Austria-Hungary in the event of a war.

The Triple Entente (from French entente [ɑ̃tɑ̃t] meaning "friendship, understanding, agreement") describes the informal mutual arrangement and understanding between the Russian Empire, the French Third Republic, and the United Kingdom of Great Britain and Ireland. It was built upon the Franco-Russian Alliance of 1894, the Entente Cordiale of 1904 between France and Britain, and the Anglo-Russian Entente of 1907. It formed a powerful counterweight to the Triple Alliance of the German Empire, the Austro-Hungarian Empire, and the Kingdom of Italy. The Triple Entente, unlike the Triple Alliance or the Franco-Russian Alliance itself, was not an alliance of mutual defence.

The Franco-Japanese Treaty of 1907 was a key part of building a coalition as France took the lead in creating alliances with Japan, Russia, and (informally) with Britain. Japan wanted to raise a loan in Paris, so France made the loan contingent on a Russo-Japanese agreement and a Japanese guarantee for France's strategically vulnerable possessions in Indochina. Britain encouraged the Russo-Japanese rapprochement. Thus was built the Triple Entente coalition that fought World War I.

The Dual Alliance (German: Zweibund, Hungarian: Kettős Szövetség) was a defensive alliance between Germany and Austria-Hungary, which was created by treaty on October 7, 1879, as part of Germany's Otto von Bismarck's system of alliances to prevent or limit war. The two powers promised each other support in case of attack by Russia. Also, each state promised benevolent neutrality to the other if one of them was attacked by another European power (generally taken to be France, even more so after the Franco-Russian Alliance of 1894). Bismarck saw the alliance as a way to prevent the isolation of the German Empire, which had just been founded a few years before, and to preserve peace, as Russia would not wage war against both empires.

Alexander III (Russian: Александр III Александрович Романов, romanized: Aleksandr III Aleksandrovich Romanov; 10 March 1845 – 1 November 1894) was Emperor of Russia, King of Congress Poland and Grand Duke of Finland from 13 March 1881 until his death in 1894. He was highly reactionary in domestic affairs and reversed some of the liberal reforms of his father, Alexander II, a policy of "counter-reforms" (Russian: контрреформы).

During his reign, Russia fought no major wars, and he came to be known as The Peacemaker (Russian: Царь-Миротворец, romanized: Tsar’-Mirotvorets Russian pronunciation: [(t)sɑːr mʲɪrɐˈtvorʲɪt͡s]), a laudatory title enduring into 21st century historiography. His major foreign policy achievement was the Franco-Russian Alliance, a major shift in international relations that eventually embroiled Russia in World War I. His political legacy represented a direct challenge to the European cultural order set forth by German statesman Otto von Bismarck, intermingling Russian influences with the shifting balances of power.