It is now more than a decade since the Soviet Government took over control of the Russian state. During that period the government has had to face and has attempted to solve, interms compatible with its special ideology, the problem of permanent adjustment to a world with radically divergent conceptions of the legal order. How that international adjustment has thus far been made becomes a question of genuine importance, for, in proportion as it has materialized in treaty form,it has thrown new light on the major problem of regional and international security. In the ensuing pages the foundations, buttresses and super structure of a system of security as conceived in Moscow will be dealt with, and the relation they bear to the rivalsystems of Geneva and Washington considered. It is believed that the polices of the Kreml in have developed, in a decade, on the basis of positive treaty law, the broad framework of a system of security having far-reaching legal significance.