This essay recounts how Matsui Keishirō (1868-1946) was involved at numerous important turning points in the history of Japanese external relations as both Vice-Minister for Foreign Affairs, one of the chief delegates at the Paris Peace Conference, Minister for Foreign Affairs and Ambassador to Britain.

This paper focuses on Admiral Viscount Saitō Makoto's (1858-1936) early career when Japan was emerging as a modern state in the Meiji and Taishō periods under the major influence of Britain.