Dated December 4, 1941
Rec'd 9:19 a. m.
Secretary of State, Washington.
220, December 4, 10 a. m.
War Department at Bandoeng claims intercepted and decoded following from Ministry Foreign Affairs Tokyo:
"When crisis leading to worst arises following will be broadcast at end weather reports: one east wind rain war with United States, two north wind cloudy war with Russia, three west wind clear war with Britain including attack on Thailand or Malaya and Dutch Indies. If spoken twice burn codes and secret papers."
Same re following from Japanese Ambassador Bangkok to Consul General Batavia:
"When threat of crisis exists following will be used five times in texts of general reports and radio broadcasts: one Higashi east America, two Kita North Russia, three Nichi west Britain with advance into Thailand and attack on Malaya and Dutch Indies."
Thorpe and Slawson cabled the above to War Department. I attach little or no importance to it and view it with some suspicion. Such have been common since 1936.
(PROCEEDINGS OF CLARKE INVESTIGATION pg. 174-5)