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-Swedish War (1656–1658) Russo-Swedish War (1656–1658) The Russo-Swedish War of 1656–1658 was fought by Russia and Sweden as a theater of the Second Northern War. It took place during a pause in the contemporary Russo-Polish War (1654-1667) as a consequence of the Truce of Vilna. Despite initial successes, Tsar Alexis of Russia failed to secure his principal objective—to revise the Treaty of Stolbovo, which had stripped Russia of the Baltic coast at the close of the Ingrian War. When Charles X of Sweden invaded Poland, captured Warsaw and announced his claims on the Russian conquests in the orbit of the Grand Duchy of