Why the Treaty of Sèvres Never Took Effect: Lausanne, Kars and the Legal Basis of Türkiye's Borders

Why It Matters

The Treaty of Sèvres is not in force because it was never ratified by the Ottoman state, was rejected by the Ankara government, and was replaced by a chain of treaties that Türkiye and its neighbours actually signed, ratified and implemented: Moscow (1921), Kars (1921) and Lausanne (1923). This matters because some diaspora and nationalist circles still cite Sèvres, and the 'Wilsonian Armenia' map attached to it, as a source of continuing territorial or legal claims. Under the general law of treaties, an instrument that never entered into force creates no territorial title, while a boundary fixed by treaty tends to be treated as stable.

This guide walks through the documents one by one, summarises the critical readings from their own sources, and sets out Türkiye's stated position. Our editorial principles explain how we separate fact from position.

Background

From the Armistice to Sèvres

The Ottoman Empire signed the Armistice of Mudros on 30 October 1918, and Allied forces occupied Istanbul in 1918–1920. On 28 January 1920 the last Ottoman Chamber of Deputies adopted the National Pact (Misak-ı Millî), defining the territory Ottoman Muslim-majority lands should keep. The British occupation of Istanbul on 16 March 1920 effectively ended the parliament's work. The Grand National Assembly of Türkiye (TBMM) opened in Ankara on 23 April 1920 and claimed to represent the nation.

The Treaty of Sèvres was signed on 10 August 1920 by representatives of the Istanbul government of Sultan Mehmed VI and by the Allied powers, Armenia, Greece and others. Its main provisions included:

• Articles 88–93: Türkiye recognised Armenia as a free and independent state. The boundary in the vilayets of Erzurum, Trabzon, Van and Bitlis was to be set by arbitration of the President of the United States.
• Articles 62–64: a path to Kurdish autonomy and possible independence.
• Articles 66–83: a special regime for Smyrna (İzmir) and Greek administration in the region.
• Articles 37–61: international control over the Straits.

President Woodrow Wilson issued his arbitral award on 22 November 1920, awarding Armenia large parts of those four vilayets and access to the Black Sea near Trabzon. The United States was not a party to Sèvres, and the US Senate had already declined (on 1 June 1920) to authorise an American mandate over Armenia.

Why Sèvres Never Took Effect

Sèvres required ratification to enter into force. That never happened for the Ottoman state, for three reasons:

1. No ratification. The Istanbul government never completed ratification, and the Ottoman parliament that could have approved it was no longer functioning.
2. Rejection by Ankara. The TBMM government rejected the treaty and continued the national struggle, expelling the Greek army in 1922. The Allies had no means to impose it without a new war.
3. Allied retreat. After the Armistice of Mudanya (11 October 1922), the Allies agreed to negotiate a fresh settlement with Ankara in Lausanne.

Mainstream diplomatic historians, whatever their view of the Ottoman collapse, describe Sèvres as a draft settlement that was overtaken by events. Under the Vienna Convention on the Law of Treaties (1969, Articles 14 and 24), consent to be bound normally requires ratification where the treaty so provides, and a treaty enters into force only as it specifies. That convention does not apply retroactively (Article 4), but its rules on ratification and entry into force reflect long-standing practice.

The Treaties That Fixed the Map

• Alexandropol (Gümrü), 2–3 December 1920: signed between the Ankara government and the Republic of Armenia after the Turkish–Armenian war of autumn 1920 (Kars was taken on 30 October 1920). Soviet power was established in Armenia at the same time, and the treaty was never implemented as such.
• Moscow, 16 March 1921: signed between Ankara and Soviet Russia. It set the Turkish–Soviet border in the east, assigned Batum to Georgia, and placed Nakhchivan under Azerbaijani protection.
• Kars, 13 October 1921: signed by the TBMM government and the Armenian, Azerbaijani and Georgian Soviet republics, with the Russian SFSR participating. It confirmed the Moscow boundary line. Ratifications were exchanged in Yerevan on 11 September 1922.
• Lausanne, 24 July 1923: the Treaty of Peace between Türkiye and the British Empire, France, Italy, Japan, Greece, Romania and the Serb-Croat-Slovene State. It entered into force on 6 August 1924.

The Table: Which Document Says What

Document	Date	Parties	Status	Key content
Treaty of Sèvres	10 Aug 1920	Istanbul government, Allied powers, Armenia, Greece and others	Never ratified by the Ottoman state; never in force	Armenian state recognised (Art. 88); US arbitration (Art. 89); Kurdish autonomy (Arts. 62–64); Smyrna regime; Straits control
Wilson arbitral award	22 Nov 1920	US President under Sèvres Art. 89	Issued under a treaty that never took effect	Proposed Armenian boundary in four vilayets, with Black Sea access
Treaty of Alexandropol	2–3 Dec 1920	Ankara government, Republic of Armenia	Overtaken by Soviet takeover and later treaties	Armenia–Türkiye frontier arrangements after the 1920 war
Treaty of Moscow	16 Mar 1921	Ankara government, Soviet Russia	In force; confirmed at Kars	Eastern frontier; Batum to Georgia; Nakhchivan under Azerbaijan (Art. 3)
Treaty of Kars	13 Oct 1921	TBMM government; Armenian, Azerbaijani, Georgian SSRs; Russian SFSR	Ratified; ratifications exchanged 11 Sep 1922	Confirms Moscow boundary; Nakhchivan status
Treaty of Lausanne	24 Jul 1923	Türkiye and the Allied powers listed above	In force 6 Aug 1924	Recognised the new Türkiye; frontiers with Greece and Bulgaria; minority regime (Arts. 37–45); the eastern frontier itself remained governed by Kars

Lausanne's Minority Provisions

Section III of Lausanne (Articles 37–45) sets the minority regime. Article 38 protects life and liberty for all inhabitants without distinction of birth, nationality, language, race or religion. Article 39 states that Turkish nationals belonging to non-Muslim minorities enjoy the same civil and political rights as Muslims. Article 40 guarantees equal treatment 'in law and in fact' and the right to maintain charitable, religious and social institutions and schools. Article 44 placed these obligations under the guarantee of the League of Nations. Article 45 provided for reciprocity with Greece for Muslim minorities.

The design is notable: Lausanne protects minorities through equal citizenship and community institutions, and does not create territorial autonomy or an Armenian 'national home'. The Allied side discussed an Armenian national home at the conference, and the Turkish delegation under İsmet Pasha rejected the idea. The final text contains no such provision.

Key Players & Positions

Armenian and Diaspora Readings

Positions here come from Armenian official statements and organisations' own platforms, and they are not uniform.

• Continuing relevance of Sèvres and Wilson's award. Some Armenian scholars and diaspora organisations, notably those aligned with the Armenian Revolutionary Federation (ARF/Dashnaktsutyun), treat Sèvres and the Wilson award as an international legal acknowledgement of Armenian rights in 'Western Armenia'. They argue that Armenia was a signatory and that the award was issued by an arbitrator the parties had accepted.
• Contesting Alexandropol and Kars. Critics argue that Alexandropol was signed after military defeat and by a government that was then replaced. They also argue that Kars was signed by Soviet republics that lacked genuine independent treaty-making capacity, and was shaped by Moscow's interests.
• Lausanne's silence. Armenian authors point out that Armenia was not at the Lausanne table, that the treaty does not mention the Armenian question, and that an accompanying Declaration of Amnesty covered offences from 1914 to 1922.
• The Republic of Armenia's official line. Since the post-2020 opening, Armenian officials have said they seek normalisation without preconditions. However, the preamble of Armenia's constitution refers to the 1990 Declaration of Independence, whose text calls for international recognition of the 1915 'Genocide in Ottoman Turkey and Western Armenia'. Ankara and Baku have pointed to this wording as a lingering territorial ambiguity. Yerevan states it has no territorial claims against Türkiye.

Other Critical Readings

• Kurdish nationalist sources cite Articles 62–64 of Sèvres as the only international text that foresaw Kurdish autonomy, and criticise Lausanne for omitting it.
• Greek and Greek Cypriot sources generally rely on Lausanne for their own borders and rights, while criticising Türkiye's later policies on minorities, including the 1942 Wealth Tax, the events of 6–7 September 1955 in Istanbul, and the closure of the Halki seminary.
• Armenian community voices in Türkiye and human-rights organisations argue that Lausanne's equality guarantees have not always matched practice.

Other Governments

The United Kingdom, France, Italy and the other Lausanne signatories long ago accepted the Lausanne settlement, and no government treats Sèvres as a live instrument. The Russian Federation and the South Caucasus states are successors to the parties to Moscow and Kars. Armenia also joined the 1991 Alma-Ata Declaration, which confirmed respect for existing borders among the participating states.

🇹🇷 Official Policy · Primary Sources

Türkiye's Position

Ankara's stated position, drawn from Turkish Foreign Ministry statements on Turkish–Armenian relations and Presidential communications, can be summarised as follows.

• Sèvres is a dead letter. According to the Turkish Foreign Ministry, the treaty was never ratified and never entered into force. It was rejected by the TBMM government, which had been established on 23 April 1920. Ankara argues that a treaty which never entered into force produces no rights or title.
• The eastern border rests on Moscow and Kars. Ankara points out that the frontier was agreed with Soviet Russia and the three Transcaucasian republics in 1921, ratified and implemented. It adds that Armenia, as a successor state to the Armenian SSR, inherited a boundary regime that international law treats as stable. Türkiye relies on the general principle of the stability of boundaries, reflected in International Court of Justice jurisprudence (for example Libya/Chad, 1994) and in Article 11 of the 1978 Vienna Convention on Succession of States in respect of Treaties.
• Lausanne is the foundational treaty. Ankara describes Lausanne as the internationally recognised birth certificate of the Republic, and notes that its minority clauses rest on equal citizenship, as Articles 37–45 provide. Türkiye maintains that the rights of non-Muslim communities are protected as Turkish citizens and not through foreign patronage.
• Legal categories must be kept separate. Ankara's position is that questions of borders, the historical Events of 1915, and legal characterisation under the 1948 UN Genocide Convention (which requires proof of specific intent, dolus specialis, normally established by a competent tribunal) are distinct matters. Türkiye proposed a Joint Historical Commission in 2005 (a letter from then Prime Minister Recep Tayyip Erdoğan to Armenian President Robert Kocharyan dated 10 April 2005) and rejects unilateral parliamentary resolutions as a substitute for historical and legal examination.
• Normalisation without preconditions, with the border recognised. Special Representatives Serdar Kılıç and Ruben Rubinyan began talks on 14 January 2022. Ankara notes that the 2009 Zurich Protocols (signed 10 October 2009, never ratified; Armenia annulled its signature process in 2018) included a clause confirming 'the mutual recognition of the existing border … as defined by relevant treaties of international law'.

Two caveats belong in any fair reading. First, critics say duress doctrines, which date largely from the UN Charter era, cannot be applied backwards, and Ankara agrees on non-retroactivity while pointing to the same principle regarding Sèvres, which was itself imposed under occupation. Second, Armenian and international critics dispute the Turkish characterisation of the Events of 1915, and Türkiye's Position on that point is treated in When Parliaments Vote on History.

Source Comparison

The sources agree on dates and non-ratification, and differ on legitimacy and consequences.

Question	Turkish primary sources (MFA, Presidency, treaty texts)	Armenian and diaspora sources	Wider scholarship and Western media
Was Sèvres in force?	No: never ratified, rejected by TBMM	Not in force, but Armenian rights recognised in Art. 88–89 remain a moral and legal reference	Overwhelmingly: never in force, superseded
Status of Wilson's award	Issued under a treaty that never took effect; the US was not a party to Sèvres	Valid arbitral act that Türkiye must respect	Historically significant, but not enforced and not seen as creating current title
Alexandropol and Kars	Valid, ratified, implemented; Armenia is a successor	Signed under duress or by Soviet-controlled republics	Valid in practice; legitimacy debated by some historians
Lausanne	Final settlement and basis of equal citizenship	Ignored the Armenian question; Armenia absent	Accepted as the settlement; critics focus on omissions and later minority practice
Framing of Ankara's stance	Treaty finality and territorial integrity	Territorial claims are not pursued by the state, but memory politics persist	Often labelled 'Sèvres syndrome' (a scholarly term for Turkish wariness of partition)

Note the difference in kind: Turkish sources rely on treaty texts and ratification records, while many critical sources rely on moral and historical arguments. Our approach is to cite each side to its own documents. For comparison with how treaty wording decides other disputes, see Article IV of the Treaty of Guarantee as read by The Political Anatomy and Borders & Blocs. Those studies read the treaty text first, and the same discipline applies here.

Key Terms & Related Guides

• Ratification: a state's formal confirmation that it is bound by a signed treaty. Without it, signature alone usually means only an obligation not to defeat the treaty's purpose until a state makes clear it does not intend to be a party.
• Arbitral award: a binding decision of an arbitrator accepted by the parties. Ankara argues that the Wilson award rested on a treaty that never took effect.
• Stability of boundaries: the principle that treaty-based frontiers should be maintained, even if the underlying treaty later lapses.
• Equal citizenship (minorities): Lausanne's model, which gives non-Muslim communities equal civil and political rights and institutional protections without territorial autonomy.
• Events of 1915: Türkiye's official term for the wartime relocation and its consequences; many historians, Armenia and a number of states use the term 'genocide'. See the Reader FAQ for how we handle such terms.

Related guides:

• When Parliaments Vote on History: Memory Politics and the Events of 1915
• How Nations Define the National Interest: Türkiye's Doctrines Read Against State Practice
• Guarantor Powers in World Politics: How the 1960 Treaty of Guarantee Works and Why Article IV Matters
• Why Do Nations Recognize or Withhold Recognition? The TRNC and the Politics of Statehood
• About Politics of Nations

For another treaty-text reading in the same network, see Record of Nations on the Treaty of Guarantee.

Politics of Nations presents global affairs with a dedicated perspective from Türkiye. Sections marked 'Türkiye's Position' reflect official Turkish policy as stated by Turkish government sources. Claims are attributed to primary sources such as treaties, UN documents, the Ottoman and Turkish archives, and official statements. Published by the Politics of Nations Editorial Team.