A diplomat who drove imperial Japan's continental diplomacy
When Matsuoka left Moscow in April 1941, Stalin himself came to the station to see him off.
Yosuke Matsuoka was a diplomat and politician of imperial Japan whose career joined continental expansion after the Manchurian Incident to the country's growing international isolation. He defended Manchukuo at the League of Nations, helping lead Japan out of the organization, then became president of the South Manchuria Railway and foreign minister. In 1941 he pursued both the alliance with Germany and Italy and the Soviet-Japanese Neutrality Pact with Molotov, but fell from office after advocating war against the Soviet Union following Germany's invasion. Detained after the war as a suspected war criminal, he died of illness during the trial before judgment.
Activities and affiliations
Career Timeline
- 1904Passed the diplomatic service examination and entered the Foreign Ministry
- 1919Staff member of Japan's delegation to the Paris Peace Conference
- 1922–1930Director of the South Manchuria Railway, vice-president from 1927
- 1933Chief plenipotentiary at the League of Nations, announcing Japan's withdrawal
- 1935–1939President of the South Manchuria Railway
- 1940–1941Foreign minister in the second Konoe cabinet, promoting the Tripartite Pact
- 1941Signed the Soviet-Japanese Neutrality Pact with Molotov
- 1941Removed as foreign minister when the third Konoe cabinet was formed
Related historical events
- 1938–1941The Soviet-Japanese Border Wars and the Neutrality PactSignatory of the Soviet-Japanese Neutrality PactIn 1941, he signed the Soviet-Japanese Neutrality Pact with Molotov.
- 1945.08The Soviet Entry into the War against JapanForeign Minister who signed the neutrality pactHe signed the Soviet-Japanese Neutrality Pact with Molotov in April 1941.
Defending Manchukuo at the League of Nations
During the League of Nations investigation into the Manchurian crisis in 1932, Matsuoka presented Japan’s case, arguing that Manchuria was essential to Japan’s survival and that Manchukuo would contribute to peace in the Far East. According to a report by the U.S. consul at Geneva, he denied that Japan’s actions stemmed from militarism and insisted that Japan’s special interests in Manchuria be recognized. He also criticized the Lytton Commission report as internally contradictory and argued that its recommendations could not be implemented until China had a strong central government. Chinese representatives answered these claims by advocating collective negotiations through the League, withdrawal of Japanese troops, and non-recognition of Manchukuo.
At the League Assembly in Geneva on February 24, 1933, Matsuoka appealed against adoption of the Lytton report. When the Assembly approved it, the Japanese delegation walked out. Contemporary press reporting put the vote at 42 to 1, with Japan casting the sole negative vote, and reported that Matsuoka announced the delegation’s withdrawal. Japan subsequently gave formal notice of withdrawal, which took effect two years later, in 1935. At the Assembly, Matsuoka asserted Japan’s claimed right to Manchuria, opposed international control, and declared that the Japanese government had reached the limit of cooperation with the League. He publicly advanced the diplomatic case for Manchukuo and led the delegation’s symbolic departure when that case failed to prevail.