Treaty of Lausanne

1923 peace treaty between Turkey and Allies

The Treaty of Lausanne was a peace treaty signed in 1923 in Switzerland's city Lausanne, after Turkey had won the Greco-Turkish War in 1919 to 1922. It settles the border between Greece and Turkey and the other borders of Turkey. Other countries that signed the treaty were Italy, France, the United Kingdom, Japan and Yugoslavia.

The Treaty of Lausanne changed the borders of Bulgaria, Greece and Turkey.
The red lines show Turkey's new borders.
Because of the Treaty of Lausanne, Turkey was not responsible for what is now called the Armenian Genocide. This is a caricature from a newspaper in 1924.

Greece and Turkey still have disputes that are often focused on the question over the country that owns islands and rocks, most of which are uninhabited, in the Aegean Sea. In 1987 and 1996, those disputes almost led to military conflict.