Takashi Sakata has recently published a fascinating study related to malaria medicines and international affairs, this time related to the use of Indonesian quinine by the Japanese government as part of its wartime diplomacy. The three primary examples discussed in this article are Thailand, Bulgaria, and most importantly Afghanistan. In the later case, shipping of the quinine was extremely complicated, and necessitated shipping through Manchukuo and the USSR. Very much worth reading.
Japanese Diplomatic Policy