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
Treaty of San Stefano Treaty of San Stefano The 1878 Preliminary Treaty of San Stefano (Russian: Сан-Стефанский мир; Peace of San-Stefano, Сан-Стефанский мирный договор; Peace treaty of San-Stefano, Turkish: "Ayastefanos Muahedesi" or "Ayastefanos Antlaşması") was a treaty between Russia and the Ottoman Empire signed at San Stefano, then a village west of Constantinople, on by Count Nicholas Pavlovich Ignatiev and Aleksandr Nelidov on behalf of the Russian Empire and Foreign Minister Safvet Pasha and Ambassador to Germany Sadullah Bey on behalf of the Ottoman Empire. The treaty ended the Russo-Turkish War, 1877–78. According to the official Russian position, by signing the treaty, Russia had