A file of signals intelligence reports, messages, and correspondence issued by the Government Code and Cypher School and sent by the head ('C') of the Secret Intelligence Service (MI6) to the Prime Minister, Winston Churchill. This file includes the following correspondence: from the Chinese Legation in Berne on the Balkan military situation, on March 18; the Japanese minister in Rio advises AXIS measures against Brazil, which has severed relations; from the Turkish ambassador in Kuibyshev on the views of the departing Japanese ambassador, on March 17; from Japan: a denial of atrocities at Hong Kong, from February 14; and a Naval Headlines report of March 21 on German and Italian activity.