Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence

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 reports: a report of the air and ground situation in Libya, for April 14; that a convoy from Murmansk was attacked by German aircraft on April 13; that attacks on shipping and harbour installations at Murmansk are planned for April 15; that preparations for an airborne operation in the northern sector of the Russian Front are to be completed by April 16: Operations FREISCHUETZ and CHOLM; that the 8th Air Corps was withdrawn from the central sector of the Russian Front on April 14; on orders for the landing operation at Demyansk on April 16; that the Turkish minister in London was invited to accompany Churchill on a visit to the U.S., to discuss the provision of materials to Turkey, on April 8; the Turkish minister in Stockholm reports Swedish views on the war and the situation in Norway, on April 11; a Turkish report on Japanese-Soviet relations of April 9; and a Japanese report from Vichy on French relations with Germany, of March 30.