Modernisation, as the passage from traditional to highly organised and sophisticated polity, did not touch the interwar USSR. Instead of that, the underdeveloped society was subjected to constant pressure practised by its own leaders. Their aim to stay in power was the reason why the traditional mechanism of brutal control over inhabitants prevailed over failing innovations of the organisation of the society. Uncertainty of their position forced the Soviet leaders to build a modern defence industry at the expense of progress in other areas. The role of Bolshevik's foreign policy in this process is evident. Abroad it acted as a defender of the social rights of working class, at home it helped to formulate and execute the Bolshevik policies. Soviet foreign policy was assisting in importing of modern technologies, supporting the communist conspiracy abroad and assisting in the development of global communist movement. The Soviet Union was gaining adherents to the communist cause, however, at the same time it was considered a potential source of destabilization and only a temporarily acceptable partner.