Exhibit 1 00378 TELEGRAM RECEIVED ________ FROM KD Tokyo This telegram must be clearly paraphrased be- Dated January 27, 1941 fore being communicated to anyone. (D) Rec'd. 6:38 a.m. Secretary of State, Washington. 125, January 27, 6 p.m. My Peruvian Colleague told a member of my staff that he had heard from many sources in- cluding a Japanese source that the Japanese military forces planned, in the event of trouble with the United States, to attempt a surprise mass attack on Pearl Harbor using all of their military facilities. He added that although the project seemed fantastic the fact that he had heard it from many sources prompted him to pass on the information. GREW.