Japan's Diplomatic Blue Book is a
summary report that can be considered as the main source for Japan's diplomatic
activities, which are published annually by the Ministry of Foreign Affairs of
Japan. The first issue was printed more than 60 years ago, in September 1957,
under the current state of Japan's Diplomatic Relations, and was published in
1971 in English, and from 1987, issue 31 in the "Diplomatic Blue
Book" until 62, 2019.