Negotiations in Portsmouth in 1905. From left to right: representatives of Russia, Korostovets, Nabokov, Witte, Rosen, Planson; representatives of Japan, Adachi, Otiay, Komura, Takahira, Sato.

On September 5 (August 23 in the old style) 1905, a treaty was signed in the American city of Portsmouth between the Russian Empire and Japan, which ended the Russo-Japanese War of 1904-1905.