Treaty of Portsmouth Treaty of Portsmouth The Treaty of Portsmouth formally ended the 1904–05 Russo-Japanese War. It was signed on September 5, 1905 after negotiations lasting from August 6 to August 30, at the Portsmouth Naval Shipyard in Kittery, Maine, United States. U.S. President Theodore Roosevelt was instrumental in the negotiations and won the Nobel Peace Prize for his efforts. The war of 1904–05 was fought between the Empire of Russia, an international power with one of the largest armies in the world, and the Empire of Japan, a nation which had only recently industrialized after two-and-a-half centuries of isolation. A series of
Russo-Prussian alliance who once said that his own political survival was tied to this treaty. Russo-Prussian alliance The Russo-Prussian alliance signed by the Kingdom of Prussia and the Russian Empire on 11 April 1764. It was pivotal to the people of Prussia and Russia, and it followed the end of the Seven Years' War. The alliance agreement expanded on the Treaty of Saint Petersburg of 1762, which ended the war between those two countries. It was a defensive alliance, in which each party declared it would protect the territorial stability of the other. It further allowed both countries to intervene in the