Claim: The Lansing–Ishii Agreement, which was hailed as a landmark in Japan–American relations, was  signed by the American lawyer and diplomat, Robert Lansing during its institution in April 1923.
Evidence: At the time, the Lansing–Ishii Agreement was touted as evidence that Japan and the United States had laid to rest their increasingly-acrimonious rivalry over China, and the agreement was hailed as a landmark in Japan–American relations. In the published text of the Agreement, signed by United States Secretary of State Robert Lansing and Japanese special envoy Ishii Kikujirō, both parties pledged to uphold the Open Door Policy in China with respect to its territorial and administrative integrity. The agreement was abrogated in April 1923, when it was replaced by the Nine-Power Treaty.