The Treaty of the Dardanelles (also known as the Dardanelles Treaty of Peace, Commerce, and Secret Alliance, the Treaty of Çanak, or the Treaty of Chanak) was concluded between the Ottoman Empire and the United Kingdom on January 5, 1809 at Çanak, Turkey. The treaty ended the Anglo-Turkish War. The Porte restored extensive British commercial and legal privileges in the empire. The United Kingdom promised to protect the integrity of the Ottoman Empire against the French threat, both with its own fleet and through weapons supplies to Istanbul.