(d) Subject to the interference that sabotage might effect and which we discuss later in this paper, the Germans will be able to transport to the Caucasus area as many troops and as much war material as they consider necessary. It is the Caspian Sea communications and the road and rail communications into Northern Iran and Southwards which limit the forces that can be used. (e) The only direct route from Anatolia to Iran enters Iran North of the bottleneck caused by the paucity of routes South of Tabriz.