Soviet–Japanese Basic Convention
1925 treaty between the Soviet Union and Japan
The Soviet–Japanese Basic Convention (日ソ基本条約, Nisso Kihon Jōyaku) was a treaty normalizing relations between the Empire of Japan and the Soviet Union that was signed on 20 January 1925. Ratifications were exchanged in Beijing on February 26, 1925. The agreement was registered in League of Nations Treaty Series on May 20, 1925.
Background
Following the defeat of the Russian Empire in the Russo-Japanese War of 1904–1905, co-operative relations between Russia and Japan were gradually restored by four sets of treaties signed between 1907 and 1916. However, the collapse of the Romanov dynasty, followed by the October Revolution and the Japanese Siberian intervention created a strong distrust between Japan and the newly founded Soviet Union.
Signing
The treaty was signed by Lev Mikhailovich Karakhan of the Soviet Union and Kenkichi Yoshizawa of Japan on 20 January 1925.
Terms
Following a series of negotiations held in Beijing in 1924 and 1925, Japan agreed to extend diplomatic recognition to the Soviet Union and to withdraw its troops from the northern half of Sakhalin island. In return, the Soviet Union agreed to honor the provisions of the Treaty of Portsmouth and to re-examine all other treaties between the former Russian Empire and Japan, including the Fishery Convention of 1907. The Soviet Union granted the Empire of Japan "most favoured nation" status. In Article VI, Japan received the right to establish concessions for mineral, timber, and other natural resources.
This brief starts where responsible research should: with the source description of “Soviet–Japanese Basic Convention” as 1925 treaty between the Soviet Union and Japan. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the history & society register because the source frames it as 1925 treaty between the Soviet Union and Japan. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Chronology, provenance and viewpoint should be read together before a broad social or political interpretation is accepted. The source revision retrieved here is dated May 22, 2026. The linked authority identifier is Q2625552. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1925, 1904, 1905 and 1907.
Official terminology may obscure informal participation, dissent or communities documented only indirectly. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Soviet–Japanese Basic Convention” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.