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 between Thailand and Japan (1940) common concern. Article 3 stipulated that if a party was under attack by a third party, the other party would not lend any assistance to the attacking third party. Article 4 provided for the ratification of the treaty. Article 5 stipulated the treaty would remain in force for five years, with the possibility to extend it further. The growing co-operation between the Thai and the Japanese governments in the wake of the treaty led the Thais to wage a brief and successful war against French Indochina in 1940-1941, which resulted in some territorial conquests for Thailand with Japanese assistance. In