Although the decisive factor in Turkish history is usually wars, there are also great diplomatic achievements in its history. One of these achievements is the Lausanne Peace Conference. The Lausanne Peace Treaty, which is accepted as the document that provides the foundation of the Ankara Government, is a subject that has been discussed from the past to the present. The Talks in Lausanne, which is an issue that should be evaluated without falling into anachronism, may be an issue that should be considered positively when the conditions of the period are considered. The aim of this study is to examine the problematic in the conditions of the period and to evaluate it within the center-periphery dichotomy. The achievements of Lausanne were explained within the framework of the imperial goals of the great powers, and it was emphasized that it would not be scientific to read the subject simply as victory-loss. Two opposing poles struggled at the conference. While Lord Curzon was putting pressure on the Turkish side under Mudros, İsmet Pasha stated that he came from Mudanya. While defending their thoughts on both sides, they tried to make the other side accept that they were victorious states. Both sides were tired of war; however, the Turkish people, who had fought on many fronts for many years, did not have the strength to fight again. Despite this situation, it can be stated that İsmet Pasha defended Turkey's interests in Lausanne as best as he could. İsmet Pasha managed to arouse prestige in many delegates at the conference. Another subject of the article is the Mosul issue, whose disappearance is still the subject of debate. It is one of the most emphasized issues that the loss of Mosul was not in Lausanne as it was thought. The Turkish delegation defended its rights in Mosul until the last moment in Lausanne. Mosul was lost much later. Turkey also struggled to prevent the Mosul issue from being discussed in the League of Nations; because at that time England had an influence in this organization.