Anglo-Portuguese Treaty of 1373 Anglo-Portuguese Treaty of 1373 The Anglo-Portuguese Treaty of 1373 was signed on 16 June 1373 between King Edward III of England and King Ferdinand and Queen Eleanor of Portugal. It established a treaty of "perpetual friendships, unions [and] alliances" between the two seafaring nations. It is the oldest active treaty in the world. It was confirmed "with my usual flourish" by John de Banketre, Clerk. It was reinforced throughout history, including in 1386, 1643, 1654, 1660, 1661, 1703, 1815 and by a secret declaration in 1899. It was recognized in the Treaties of Arbitration in the 20th century between Britain
Treaty of the Dardanelles treaty affirmed the principle that no warships of any power should enter the straits of the Dardanelles and the Bosporus. The treaty anticipated the London Straits Convention of 1841, by which the other major powers committed themselves to this same principle. Treaty of the Dardanelles The Treaty of the Dardanelles (also known as the Dardanelles Treaty of Peace, Commerce, and Secret Alliance, the Treaty of Çanak, the Treaty of Chanak or ) was concluded between the Ottoman Empire and the United Kingdom of Great Britain and Ireland on 5 January 1809 at Çanak, Ottoman Empire. The treaty ended the Anglo-Turkish