ðə jˌuːˈɛs ˈɑːɹmi sˈɪɡnəl ɪntˈɛlɪdʒəns sˈɜːvɪs ˌɛsˌaɪˈɛs bɹˈeɪk ˌɪntʊ ðə hˈaɪɪst sᵻkjˈʊɹɹᵻɾi dʒˌæpənˈiːz dˌɪpləmˈæɾɪk sˈaɪfɚ kˈɔːld pˈɜːpəl baɪ jˌuːˈɛs ˈænɐlˌɪsts pɹədˈuːst vˈɛɹi ˈɪntɹɛstɪŋ ɪntˈɛlɪdʒəns, bˌʌt lˈɪɾəl ʌv mˈɪlətˌɛɹi vˈæljuː ɛksˈɛpt fɔːɹ ɐmbˈæsədɚ hɪɹˈoʊʃi ɑːʃˈiːməz dᵻspˈætʃᵻz fɹʌm dʒˈɜːməni; nˈʌn ʌv tˈæktɪkəl vˈæljuː, ænd nˌɑːt mˈʌtʃ mˈoːɹ ʌv dᵻɹˈɛkt pəlˈɪɾɪkəl vˈæljuː æz ðə fˈɔːɹən ˈɑːfɪs ɪn dʒəpˈæn wʌz θˈɔːt baɪ ðɪ ˈʌltɹənˈæʃənəlˌɪsts ɪn ɪfˈɛktɪv tʃˈɑːɹdʒ ʌv dʒˌæpənˈiːz fˈɔːɹən ænd mˈɪlətˌɛɹi pˈɑːlɪsi, təbi ˌʌnɹᵻlˈaɪəbəl.
The US Army Signal Intelligence Service (SIS) break into the highest security Japanese diplomatic cypher (called PURPLE by US analysts) produced very interesting intelligence, but little of military value (except for Ambassador Hiroshi Oshima's despatches from Germany); none of tactical value, and not much more of direct political value as the Foreign Office in Japan was thought by the ultra-nationalists in effective charge of Japanese foreign and military policy, to be unreliable.