When this study was originally prepared nearly thirty years ago, it was part of a larger government memorandum. As such it was written within a framework of exploring problems of economic relations with the USSR after the war, with the expectation of a large and mutually beneficial trade in mind. At the time, I presented a general analysis of these problems in a longish pamphlet. I was unable, however, in that publication to touch upon the problem of Soviet policies on, and relations with, international cartels, because the government document in question was classified as “secret,” as was the information I had obtained in the course of preparing it. The recent declassification of that document by both the Department of State and the Department of Justice (from whose Antitrust Division a large body of valuable information had been received) has caused me to consider publication of the material on the four case studies of Soviet participation in international cartels—to wit, the cases concerning matches, phosphates, potash, and platinum. I feel that such publication is warranted essentially for two reasons.