Greco-Turkish War (1919–1922) in the context of Aftermath of World War I

The Treaty of Lausanne (French: Traité de Lausanne, Turkish: Lozan Antlaşması) is a peace treaty negotiated during the Lausanne Conference of 1922–1923 and signed in the Palais de Rumine in Lausanne, Switzerland, on 24 July 1923. The treaty officially resolved the conflict that had initially arisen between the Ottoman Empire and the Allied French Republic, British Empire, Kingdom of Italy, Empire of Japan, Kingdom of Greece, Kingdom of Serbia, and the Kingdom of Romania since the outset of World War I. The original text of the treaty is in English and French. It emerged as a second attempt at peace after the failed and unratified Treaty of Sèvres, which had sought to partition Ottoman territories. The earlier treaty, signed in 1920, was later rejected by the Turkish National Movement which actively opposed its terms. As a result of Greek defeat in the Greco-Turkish War, Turkish forces recaptured İzmir, and the Armistice of Mudanya was signed in October 1922. This armistice provided for the exchange of Greek-Turkish populations and allowed unrestricted civilian, non-military passage through the Turkish Straits.

Turkey ratified the treaty on 23 August 1923, and all other signatories did so by 16 July 1924. The Treaty of Lausanne became effective on 6 August 1924.

The Convention Concerning the Exchange of Greek and Turkish Populations (Greek: Σύμβαση για την Ανταλλαγή των ελληνικών και τουρκικών Πληθυσμών, romanized: Symvasi gia eis Antallagi ton ellinikon kai tourkikon Plithysmon, Turkish: Türk ve Yunan Nüfuslarının Mübadelesine İlişkin Sözleşme), also known as the Lausanne Convention, was an agreement between the Greek and Turkish governments signed by their representatives in Lausanne on 30 January 1923, in the aftermath of the Greco-Turkish War of 1919–1922. The agreement provided for the simultaneous expulsion of Orthodox Christians from Turkey to Greece and of Muslims from Greece (particularly from the north of the country) to Turkey. These involuntary population transfers involved approximately two million people, around 1.5 million Anatolian Greeks and 500,000 Muslims in Greece.

The 1923 population exchange between Greece and Turkey stemmed from the "Convention Concerning the Exchange of Greek and Turkish Populations" signed at Lausanne, Switzerland, on 30 January 1923, by the governments of Greece and Turkey. It involved at least 1.6 million people (1,221,489 Greek Orthodox from Asia Minor, Eastern Thrace, the Pontic Alps and the Caucasus, and 355,000–400,000 Muslims from Greece), most of whom were forcibly made refugees and de jure denaturalized from their homelands.

On 16 March 1922, Turkish Minister of Foreign Affairs Yusuf Kemal Tengrişenk stated that "[t]he Ankara Government was strongly in favour of a solution that would satisfy world opinion and ensure tranquillity in its own country", and that "[i]t was ready to accept the idea of an exchange of populations between the Greeks in Asia Minor and the Muslims in Greece". Eventually, the initial request for an exchange of population came from Eleftherios Venizelos in a letter he submitted to the League of Nations on 16 October 1922, following Greece's defeat in the Greco-Turkish War and two days after their accession of the Armistice of Mudanya. The request intended to normalize relations de jure, since the majority of surviving Greek inhabitants of Turkey had fled from recent genocidal massacres to Greece by that time already. Venizelos proposed a "compulsory exchange of Greek and Turkish populations", and asked Fridtjof Nansen to make the necessary arrangements. The new state of Turkey also envisioned the population exchange as a way to formalize and make permanent the flight of its native Greek Orthodox peoples while initiating a new exodus of a smaller number (400,000) of Muslims from Greece as a way to provide settlers for the newly depopulated Orthodox villages of Turkey. Norman M. Naimark claimed that this treaty was the last part of an ethnic cleansing campaign to create an ethnically pure homeland for the Turks. Historian Dinah Shelton similarly wrote that "the Lausanne Treaty of 1923 completed the process of the forcible transfer of the Greeks".

Kayaköy (also: Kaya or Livissi) is a neighbourhood of the municipality and district of Fethiye, Muğla Province, Turkey. In 2022, its population was 975. Situated 8 km south of Fethiye, it is mostly abandoned. It was anciently known in Greek as Karmylessos (Ancient Greek: Καρμυλησσός), shortened to Lebessos (Ancient Greek: Λεβέσσος) and pronounced in Modern Greek as Leivissi (Greek: Λειβίσσι). From Ancient Greek the town name shifted to Koine Greek by the Roman period, evolved into Byzantine Greek in the Middle Ages, and finally became the Modern Greek name still used by its townspeople before their final evacuation in 1923.

In late antiquity the inhabitants of the region had become Christian and, following the East-West Schism with the Church of Rome in 1054 AD, they came to be called Greek Orthodox Christian. These Greek-speaking Christian subjects, and their Turkish-speaking Muslim Ottoman rulers, lived in relative harmony from the end of the turbulent Ottoman conquest of the region in the 14th century until the early 20th century. Following the Greco-Turkish War of 1919–1922, and the subsequent Treaty of Lausanne in 1923, the town's Greek Orthodox residents were exiled from Livissi.

Greek refugees is a collective term used to refer to the more than one million Greek Orthodox natives of Asia Minor, Thrace and the Black Sea areas who fled during the Greek genocide (1914-1923) and Greece's later defeat in the Greco-Turkish War (1919–1922), as well as remaining Greek Orthodox inhabitants of Turkey who were required to leave their homes for Greece shortly thereafter as part of the population exchange between Greece and Turkey, which formalized the population transfer and barred the return of the refugees. This Convention Concerning the Exchange of Greek and Turkish Populations was signed in Lausanne, on January 30, 1923 as part of the peace treaty between Greece and Turkey and required all remaining Orthodox Christians in Turkey, regardless of what language they spoke, be relocated to Greece with the exception of those in Istanbul and two nearby islands. Although the term has been used in various times to refer to fleeing populations of Greek descent (primarily after the Ionian Revolt, the Fall of Constantinople or the Greek Civil War), the population strength and the influence of the Asia Minor Greeks in Greece itself, has attached the term to the Anatolian Greek population of the early 20th century. At least 300,000 Greek refugees were from Eastern Thrace, whereas at least 900,000 were from Asia Minor. At least 150,000 were from Istanbul, who left the city in three years before 1928.

The city of Smyrna (modern-day İzmir) and surrounding areas were under Greek military occupation from 15 May 1919 until 9 September 1922. The Allied Powers authorized the occupation and creation of the Zone of Smyrna (Greek: Ζώνη Σμύρνης, romanized: Zóni Smýrnis) during negotiations regarding the partition of the Ottoman Empire to protect the ethnic Greek population living in and around the city. The Greek landing on 15 May 1919 was celebrated by the substantial local Greek population but quickly resulted in ethnic violence in the area. This violence decreased international support for the occupation and led to a rise in Turkish nationalism. The high commissioner of Smyrna, Aristeidis Stergiadis, firmly opposed discrimination against the Turkish population by the administration; however, ethnic tensions and discrimination remained. Stergiadis also began work on projects involving resettlement of Greek refugees, the foundations for a university, and some public health projects. Smyrna was a major base of operations for Greek troops in Anatolia during the Greco-Turkish War (1919–1922).

The Greek occupation of Smyrna ended on 9 September 1922 with the Turkish capture of Smyrna by troops commanded by Mustafa Kemal Atatürk. After the Turkish advance on Smyrna, a mob murdered the Orthodox bishop Chrysostomos and a few days later the Great Fire of Smyrna burnt large parts of the city (including most of the Greek and Armenian areas). Estimated Greek and Armenian deaths range from 10,000 to 100,000. With the end of the occupation of Smyrna, major combat in Anatolia between Greek and Turkish forces largely ended, and on 24 July 1923, the parties signed the Treaty of Lausanne ending the war.

The Turkish capture of Smyrna or the Liberation of İzmir (Turkish: İzmir'in Kurtuluşu) marked the end of the 1919–1922 Greco-Turkish War, and the culmination of the Turkish War of Independence. On 9 September 1922, following the headlong retreat of the Greek army after its defeat at the Battle of Dumlupınar and its evacuation from western Anatolia, the Turkish 5th Cavalry Corps under the command of Major-General Fahrettin Altay within Turkish Army under the command of Mustafa Kemal Pasha marched into the city of Smyrna (modern İzmir), bringing three years of Greek occupation to an end.

The Greek landing at Smyrna (Greek: Ελληνική απόβαση στη Σμύρνη; Turkish: Yunanların İzmir'e çıkışı) was a military operation by Greek forces starting on May 15, 1919 which involved landing troops in the city of Smyrna and surrounding areas. The Allied powers sanctioned and oversaw the planning of the operation and assisted by directing their forces to take over some key locations and moving warships to the Smyrna harbor. During the landing, a shot was fired on the Greek 1/38 Evzone Regiment and significant violence ensued with Greek troops and Greek citizens of Smyrna participating. The event became important for creating the three-year-long Greek Occupation of Smyrna and was a major spark for the Greco-Turkish War (1919–1922).

The Battle of the Sakarya (Turkish: Sakarya Meydan Muharebesi, lit. 'Sakarya Field Battle'), also known as the Battle of the Sangarios (Greek: Μάχη του Σαγγαρίου, romanized: Máchi tou Sangaríou), was an important engagement in the Greco-Turkish War (1919–1922).

The battle went on for 21 days from August 23 to September 13, 1921, close to the banks of the Sakarya River in the immediate vicinity of Polatlı, which is today a district of the Ankara Province. The battle line stretched over 62 miles (100 km).

The Chanak crisis (Turkish: Çanakkale Krizi), also called the Chanak affair and the Chanak incident, was a war scare in September 1922 between the United Kingdom and the Government of the Grand National Assembly in Turkey. Chanak refers to Çanakkale, a city on the Anatolian side of the Dardanelles Strait. The crisis was caused by Turkish efforts to push the Greek armies out of Turkey and restore Turkish rule in the Allied-occupied territories, primarily in Constantinople (now Istanbul) and Eastern Thrace. Turkish troops marched against British and French positions in the Dardanelles neutral zone. For a time, war between Britain and Turkey seemed possible, but Canada refused to agree as did France and Italy. British public opinion did not want a war. The British military did not either, and the top general on the scene, Sir Charles Harington, refused to relay an ultimatum to the Turks because he counted on a negotiated settlement. The Conservatives in Britain's coalition government refused to follow Liberal Prime Minister David Lloyd George, who with Winston Churchill was calling for war.

The crisis quickly ended when Turkey, having overwhelmed the Greeks, agreed to a negotiated settlement that gave it the territory it wanted. Lloyd George's mishandling of the crisis contributed to his downfall via the Carlton Club meeting. The crisis raised the issue of who decided on war for the British Empire, and was Canada's first assertion of diplomatic independence from London. Historian Robert Blake says the Chanak crisis led to Arthur Balfour's definition of Britain and the dominions as "autonomous Communities within the British Empire, equal in status, in no way subordinate one to another in any aspect of the domestic or internal affairs, though united by a common allegiance to the Crown, and freely associated as members of the British Commonwealth of Nations". In 1931 the UK Parliament enacted Balfour's formula into law through the Statute of Westminster 1931.

George II (Greek: Γεώργιος Β', romanized: Geórgios II; 19 July [O.S. 7 July] 1890 – 1 April 1947) was King of Greece from 27 September 1922 until 25 March 1924, and again from 25 November 1935 until his death on 1 April 1947.

The eldest son of King Constantine I of Greece and Princess Sophia of Prussia, George followed his father into exile in 1917 following the National Schism, while his younger brother Alexander was installed as king. Constantine was restored to the throne in 1920 after Alexander's death, but was forced to abdicate two years later in the aftermath of the Greco-Turkish War. George acceded to the Greek throne, but after a failed royalist coup in October 1923 he was exiled to Romania. Greece was proclaimed a republic in March 1924 and George was formally deposed and stripped of Greek nationality. He remained in exile until the Greek monarchy was restored in 1935, following a rigged referendum, upon which he resumed his royal duties. The king supported Ioannis Metaxas' 1936 self-coup, which established an authoritarian, nationalist and anti-communist dictatorship known as 4th of August Regime.

During the decline and dissolution of the Ottoman Empire, Muslim inhabitants (including Turks, Kurds, Albanians, Bosnian Muslims, Circassians, Serb Muslims, Greek Muslims, Muslim Roma, Pomaks) living in territories previously under Ottoman control often found themselves persecuted after borders were re-drawn. These populations were subject to genocide, expropriation, massacres, religious persecution, mass rape, and ethnic cleansing.

The 19th century saw the rise of nationalism in the Balkans coincide with the decline of Ottoman power, which resulted in the establishment of an independent Greece, Serbia, Bulgaria and Romania. At the same time, the Russian Empire expanded into previously Ottoman-ruled or Ottoman-allied regions of the Caucasus and the Black Sea region. These conflicts such as the Circassian genocide created large numbers of Muslim refugees. Persecutions of Muslims resumed during World War I by the invading Russian troops in the east and during the Turkish War of Independence in the west, east, and south of Anatolia by Greek troops and Armenian fedayis. After the Greco-Turkish War, a population exchange between Greece and Turkey took place, and most Muslims of Greece left. During these times many Muslim refugees, called Muhacir, settled in Turkey.

The Battle of Dumlupınar (Greek: Μάχη του Τουμλού Μπουνάρ, romanized: Máchi tou Toumloú Bounár, Turkish: Dumlupınar (Meydan) Muharebesi, lit. 'Dumlupınar (Field) Battle'), or known as Field Battle of the Commander-in-Chief (Turkish: Başkumandanlık Meydan Muharebesi) in Turkey, was one of the important battles in the Greco-Turkish War (1919–1922) (part of the Turkish War of Independence). The battle was fought from 26 to 30 August 1922 near Dumlupınar, Kütahya in Turkey.

Alexander (Greek: Αλέξανδρος, romanized: Aléxandros; 1 August 1893 – 25 October 1920) was King of Greece from 11 June 1917 until his death on 25 October 1920.

The second son of King Constantine I, Alexander was born in the summer palace of Tatoi on the outskirts of Athens. He succeeded his father in 1917, during World War I, after the Entente Powers and the followers of Eleftherios Venizelos pushed King Constantine and his eldest son, Crown Prince George, into exile. Having no real political experience, the new king was stripped of his powers by the Venizelists and effectively imprisoned in his own palace. Venizelos, as prime minister, was the effective ruler with the support of the Entente. Though reduced to the status of a puppet king, Alexander supported Greek troops during their war against the Ottoman Empire and Bulgaria. Under his reign, the territorial extent of Greece considerably increased, following the victory of the Entente and their Allies in the First World War and the early stages of the Greco-Turkish War of 1919–1922.