Chokugen, 'the sole publication of the Japanese socialists' was stored in Russia before it came to the IISH. This issue dates from 2 April 1905, in the midst of the Russo-Japanese war. It has the stamp of the Library and Archive of the Russian Social-Democratic Labour Party (RSDAP) on it. Socialists of belligerent nations vowed solidarity and practised it as well. This issue draws attention to the fate of Russian prisoners of war in Japan.