The period from 1935 to 1946 is one of the most intense and significant in the history of Iran. It includes important milestones in the country’s internal development and events related to World War II, primarily the Tehran Conference, at which all the leaders of the countries of the anti-Hitler coalition met face to face for the first time. In the book of the famous historian, laureate of the. Pikul, author of the bestseller “Persia: the history of an undiscovered country” Alex Gromov talks about relations between the USSR and Iran since the 1930s, the introduction of allied troops, the defeat of German agents, Lend-Lease through Iran, the Tehran conference itself and its significance. Attention is paid to versions of the preparation of an assassination attempt on the leaders of the anti-Hitler coalition with the participation of Otto Skorzeny.