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 friendship and alliance between the Government of Mongolia and Tibet use the treaty to gain influence on Tibetan matters. While China ultimately did not sign the Simla Convention, a similar treaty, the tripartite Treaty of Kyakhta, was signed by Mongolia, the Republic of China and Russia on 25 May 1915. The agreement affirmed Mongolia's complete autonomy in internal matters and Russian privileges in Mongolia, at the same time formally recognized China's suzerainty over the country. Treaty of friendship and alliance between the Government of Mongolia and Tibet A Treaty of friendship and alliance between the Government of Mongolia and Tibet was signed on 11 January 1913 (corresponding to 29 December