CHAR 20/76/75: telegram from WSC to the Minister of State in the Middle East [Richard Casey] marked "personal" regarding military co-ordination with the Soviet Union against the possibility of a German attack through the Caucasus and stating that it was "not possible to come to grips with the Russians" on the points mentioned by Casey but that relations have become more intimate and that he believes that the Germans will not have a smooth or rapid advance into the Caucasus.CHAR 20/76/74 and CHAR 20/76/76: slips of paper reading: "Unparaphrased version of a Secret Cypher Message not One Time Table.".