Enver Pasha in the context of "Black Sea Raid"

The Treaty of London (1913) was signed on 30 May following the London Conference of 1912–1913. It dealt with the territorial adjustments arising out of the conclusion of the First Balkan War. The London Conference had ended on 23 January 1913, when the 1913 Ottoman coup d'état took place and Ottoman Grand Vizier Kâmil Pasha was forced to resign. Coup leader Enver Pasha withdrew the Ottoman Empire from the Conference, and the Treaty of London was signed without the presence of the Ottoman delegation. Further border changes were ratified in the Treaty of Bucharest in August 1913.

Starting in the 19th century the Ottoman Empire's governing structure slowly transitioned and standardized itself into a Western style system of government, sometimes known as the Imperial Government. Mahmud II (r. 1808–1839) initiated this process following the disbandment and massacre of the Janissary corps, at this point a conservative bureaucratic elite, in the Auspicious Incident. A long period of reform known as the Tanzimat period started, which yielded much needed reform to the government and social contract with the multicultural citizens of the empire.

In the height of the Tanzimat period in 1876, Abdul Hamid II (r. 1876–1909) turned the Empire into a constitutional monarchy by promulgating the Empire's first Constitution, which established the short First Constitutional Era and also featured elections for a parliament. Defeat in the 1877–1878 War with Russia and dissatisfaction with Abdul Hamid lead to the "temporary" suspension of the constitution and the parliament, resulting in a modern despotism/autocracy of Abdul Hamid, during which internal reform continued. The Young Turk Revolution in 1908 started the longer lasting Second Constitutional Era and forced Abdul Hamid to reinstate the constitution, recall the parliament, and hold elections again which this time which featured political parties. However, by 1913 the Ottoman Empire was a dictatorship of the Committee of Union and Progress (CUP), led by the Three Pashas (Talat Pasha, Enver Pasha, and Cemal Pasha). This dictatorship capitalized on the developed bureaucracy created through a century of reform and centralization by undertaking genocide against Christian minorities. The CUP also undertook many reforms relating to social structure, religion, and education, which would be continued and more far reaching under Mustafa Kemal Atatürk's regime. The Union and Progress dictatorship lasted until the end of World War I, which lead to the Empire's collapse and subsequent abolition by Turkish nationalist forces led by Atatürk.

The Young Turk Revolution (July 1908; Turkish: Jön Türk Devrimi) was a constitutionalist revolution in the Ottoman Empire. Revolutionaries belonging to the Internal Committee of Union and Progress, an organization of the Young Turks movement, forced Sultan Abdul Hamid II to restore the Constitution, recall the parliament, and schedule an election. Thus began the Second Constitutional Era which lasted from 1908–1912 and also the Turkish Revolution, an era of political instability and social change which lasted for more than four decades.

The revolution took place in Ottoman Rumeli in the context of the Macedonian Struggle and the increasing instability of the Hamidian regime. It began with CUP member Ahmed Niyazi's flight into the Albanian highlands. He was soon joined by İsmail Enver, Eyub Sabri, and other Unionist officers. They networked with local Albanians and utilized their connections within the Salonica based Third Army to instigate a large revolt. A string of assassinations by Unionist Fedai also contributed to Abdul Hamid's capitulation. Though the constitutional regime established after the revolution eventually succumbed to Unionist dictatorship by 1913, the Ottoman sultanate ceased to be the base of power in Turkey after 1908.

The Young Turks (Ottoman Turkish: ژون تركلر, romanized: Jön Türkler, also كنج تركلر Genç Türkler) formed as a constitutionalist broad opposition-movement in the late Ottoman Empire against the absolutist régime of Sultan Abdul Hamid II (r. 1876–1909). The most powerful organisation within the movement, and the most conflated, was the Committee of Union and Progress (CUP, founded in 1889), though its ideology, strategies, and membership continuously changed. By the 1890s, the Young Turks were mainly a loose and contentious network of exiled intelligentsia who made a living by selling their newspapers to secret subscribers. Beyond opposition, exiled writers and sociologists debated Turkey's place in the East–West dichotomy.

Included in the opposition movement was a mosaic of ideologies, represented by democrats, liberals, decentralists, secularists, social Darwinists, technocrats, constitutional monarchists, and nationalists. Despite being called "the Young Turks", the group was of an ethnically diverse background; including Turks, Albanian, Aromanian, Arab, Armenian, Azeri, Circassian, Greek, Kurdish, and Jewish members. Besides membership in outlawed political committees, other avenues of opposition existed in the ulama, Sufi lodges, and masonic lodges. By and large, Young Turks favored taking power away from Yıldız Palace in favour of constitutional governance. The movement was popular especially among young, educated Ottomans and military officers that wanted reforms. They believed that a social contract in the form of a constitution would fix the empire's problems with nationalist movements and foreign intervention by instilling Ottomanism, or multi-cultural Ottoman nationalism.

The 1913 Ottoman coup d'état (23 January 1913), also known as the Raid on the Sublime Porte (Turkish: Bâb-ı Âlî Baskını), was a coup d'état carried out in the Ottoman Empire by a number of Committee of Union and Progress (CUP) members led by Ismail Enver Bey and Mehmed Talât Bey, in which the group made a surprise raid on the central Ottoman government buildings, the Sublime Porte (Turkish: Bâb-ı Âlî).

After receiving the permission of Sultan Mehmed V to form a new government in late October 1912, Kâmil Pasha sat down to engage in diplomatic talks with Bulgaria after the unsuccessful First Balkan War. With the Bulgarian demand for the cession of the former Ottoman capital city of Adrianople (today, and in Turkish at the time, known as Edirne) looming and the outrage among the Turkish populace as well as the CUP leadership, the CUP carried out the coup on January 23, 1913. After the coup, opposition parties were subject to heavy repression. The new government led by Mahmud Şevket Pasha with Unionist support withdrew the Ottoman Empire from the ongoing London Peace Conference and resumed the war against the Balkan states to recover Edirne and the rest of Rumelia, but to no avail. After his assassination in June, the CUP would take full control of the empire, and opposition leaders would be arrested or exiled to Europe.

The Basmachi movement (Russian: Басмачество, romanized: Basmachestvo, derived from Uzbek: Босмачи, romanized: Bosmachi, lit. 'bandits') was an uprising against Imperial Russian and Soviet rule in Central Asia by rebel groups inspired by Islamic beliefs and Pan-Turkism. It has been called "probably the most important movement of opposition to Soviet rule in Central Asia".

The movement's roots lay in the anti-conscription violence of 1916 which erupted when the Russian Empire began to draft Muslims for army service in World War I. In the months following the October 1917 Revolution, the Bolsheviks seized power in many parts of the Russian Empire and the Russian Civil War began. Turkestani Muslim political movements attempted to form an autonomous government in the city of Kokand, in the Fergana Valley. The Bolsheviks launched an assault on Kokand in February 1918 and carried out a general massacre of up to 25,000 people. The massacre rallied support to the Basmachi who waged a guerrilla and conventional war that seized control of large parts of the Fergana Valley and much of Turkestan. The group's notable leaders were Enver Pasha and, later, Ibrahim Bek.

The Three Pashas (Ottoman Turkish: اوچ پاشالر, Turkish: Üç Paşalar), also known as the Young Turk triumvirate or CUP triumvirate, were the dominant political and military figures who effectively ruled the Ottoman Empire after the 1913 Ottoman coup d'état and the subsequent assassination of Mahmud Shevket Pasha. It consisted of Mehmed Talaat Pasha, the Grand Vizier (prime minister) and Minister of the Interior; Ismail Enver Pasha, the Minister of War and Commander-in-Chief to the Sultan; and Ahmed Djemal Pasha, the Minister of the Navy and governor-general of Syria.

The Three Pashas were all members of the Central Committee of the Committee of Union and Progress, a political movement that had begun with reformist ideals but by the 1910s had become an autocratic and nationalist ruling faction. The trio were largely responsible for the Empire's entry into World War I in 1914 on the side of the Central Powers and also largely responsible for the genocide of some one million Armenians. The Turkish public has widely criticized the Three Pashas for drawing the Ottoman Empire into World War I and its subsequent defeat. All three met violent deaths after the war—Talaat and Cemal were assassinated by the Armenian Revolutionary Federation as part of Operation Nemesis, whilst Enver died leading the Basmachi Revolt near Dushanbe, present-day Tajikistan.

Ahmed Djemal Pasha (Ottoman Turkish: احمد جمال پاشا; Turkish: Ahmed Cemâl Paşa; 6 May 1872 – 21 July 1922) was an Ottoman general and statesman. Along with Talaat and Enver, he was one of the Three Pashas that ruled the Ottoman Empire during World War I.

As an officer of the II Corps, he was stationed in Salonica, where he developed political sympathies for the Committee of Union and Progress (CUP), a secret reformist party. He was initially praised by Christian missionaries and provided support to the Armenian victims of the Adana massacres.