Four-Power Treaty Anglo-Japanese Alliance Washington Naval Treaty Siberian Intervention Great Kantō earthquake Daisuke Namba Toranomon Incident communist France
In the Four-Power Treaty on Insular Possessions signed on 13 December 1921, Japan, the United States, Britain, and France agreed to recognize the status quo in the Pacific. Japan and Britain agreed to end the Anglo-Japanese Alliance. The Washington Naval Treaty limiting warship numbers was signed on 6 February 1922. Japan withdrew troops from the Siberian Intervention on 28 August 1922. The Great Kantō earthquake devastated Tokyo on 1 September 1923. On 27 December 1923, Daisuke Namba attempted to assassinate Hirohito in the Toranomon Incident, but his attempt failed. During interrogation, he claimed to be a communist and was executed.
