This collection of 10,000 pages in 13 volumes has been selected with the intention of examining in detail the political developments within Iran and the changes in Iranian policy that resulted from movements in the balance of power during the Second World War. It forms the first part of a forthcoming series tracing the political development of modern Iran through contemporary documents. The period 1941-1946 is a significant and complex one. These key documents draw together despatches, letters, telegrams, reports, minutes and records of meetings from many disparate British Government files to give a full record of Iran during the period of World War II, detailing Iran's relations with Great Britain, the Soviet Union, Turkey and the USA during this critical period.