Since the 2004 meeting, the two States have sought to promote trade diversification, encourage their Customs administrations to establish direct contacts in order to improve and facilitate trade, promote reciprocal visits between the business community, exchange experiences on World Trade Organization policies and encourage their private sector enterprises to develop joint investment projects. Customers. Among many agreements, there was a separate agreement with the United States, the Chester Concession. In the United States, the treaty was rejected by several groups, including the Committee Against the Treaty of Lausanne (COLT), and on January 18, 1927, the United States Senate refused to ratify the treaty by 50 votes to 34, six votes less than the two-thirds required by the Constitution.  Therefore, Turkey cancelled the concession.  Relations between Saudi Arabia and Turkey have always oscillated between cooperation, the alliance of hostility and mistrust. Since the nineteenth century, the two nations have always had a complicated relationship. While Turkey and Saudi Arabia are important economic partners, these two have tense political relations, viewed from the point of view of historical hostility. Differences in the practice of Islam between the two countries often cause friction. The Treaty of Lausanne was a peace treaty negotiated at the Lausanne Conference of 1922–23 and signed on 24 July 1923 at the Palais de Rumine, Lausanne, Switzerland. It officially resolved the conflict that originally existed between the Ottoman Empire and the Allied French Republic, the British Empire, the Kingdom of Italy, the Empire of Japan, the Kingdom of Greece and the Kingdom of Romania since the beginning of World War I.
 The original text of the treaty is in French.  This was the result of a second attempt at peace after the failure of the Treaty of Sèvres. The old treaty had been signed in 1920, but was later rejected by the Turkish national movement, which was fighting against its conditions. The Treaty of Lausanne ended the conflict and defined the boundaries of the modern Turkish Republic. In the treaty, Turkey surrendered all claims to the rest of the Ottoman Empire and, in exchange, the Allies recognized Turkish sovereignty within their new borders.  It provided for Greek-Turkish population exchanges and allowed unrestricted civilian passage through the Turkish Strait (but not militarily; this would happen with the Montreux Convention). A house at the back of the treaty granted immunity to Turkish perpetrators for crimes committed between 1914 and 1922, including the Armenian Genocide. In 2008, the volume of trade between Turkey and Saudi Arabia exceeded US$5 billion, but by 2009, after the global economic crisis and the fall in iron and steel exports, trade between the two countries had fallen to US$3 billion. Nevertheless, the volume of bilateral trade began to increase until 2010, returning to $4.65 billion by the end of the year. Turkish exports to Saudi Arabia are mainly clothing, textiles, iron, steel, automobiles, fruits, vegetables and other agricultural products, while about 80% of Turkish imports from Saudi Arabia are oil. Relations between Turkey and Saudi Arabia began in 1932, after the creation of the new Saudi kingdom. During the first phase of the relations, Saudi Arabia and Turkey shared a cordial relationship, with Turkish leader Mustafa Kemal Atatürk being interested in keeping Turkey safe and friendly with the international community and tried to stay away from religious discord.
 Both Turkey and Saudi Arabia did not join World War II and retained neutrality. . . .