THE FOCUS OF present paper is American led victories in cold war and in North/South struggle, and consequent reassertion of American hegemony. These are seen here as two conceptually distinguishable struggles, victories, and defeats. But two--no matter from what angle they are viewed--are intertwined and mutually interacting. This is a logical hypothesis, one that will be tested in this study. The evidence used here to indicate American led victories is ultimately traceable to roll calls of General Assembly of United Nations. The roll calls are raw material used since 1984 by United States mission to United Nations to generate annual indices of concordance with United States position for each member and also aggregated composite indices for key groups. Two indices have been generated for each member and for key groups. One type index features all roll calls for a session; other type only restricted number of roll calls for session deemed important by U.S. mission and on which mission and even U.S. embassies around lobbied. The publication of these two types of indices allows researcher rare opportunity to resolve a classical enigma in roll call analysis: how to distinguish between reaction of voter to substance and content of a bill or a draft resolution versus reaction of voter to impact of factions, parties, and other outside pressures impinging on voter. The literature indicates that voting on all roll calls should be used to indicate reaction to content and substance, that on roll calls deemed important and lobbied by U.S. mission, example in our case, should be used to measure impact of U.S. pressure and therefore presence of U.S. hegemony. In case of third in this study, this pressure is visualized as being pitted against opposing pressure associated with loyalty to other members of group. Each type index will be applied to both of major struggles presented in paper, and findings will be duly recorded and interpreted. The U.S. Mission has published annually both types of indices, beginning in 1984, with last one published in 1992 and applying to 1991. They thus span cold war and post cold war period. This provides a unique opportunity to test what Tomlin calls convergent validity of roll calls, ability of these instruments to reflect reality, i.e. situation as it exists outside halls of institution. In this case we know what happened to communism in 1989 and 1990 in real world, and we shall examine two types of indices which precede and which follow death of communism. The fact that changes for former Soviet bloc were dramatic is significant for our purposes, since paper is built upon assumption of convergent validity. The paper provides other persuasive empirical evidence to support this type of validity before mission's indices are examined. Both indices for former Soviet bloc and those for third witness dramatic change in post cold war period, but there is a significant difference in changes. This will enable us to draw a distinction between defeat of communism and defeat of South: North/South struggle continues on as a substantive policy, but attenuated by increasing pressure from United States. The impact which defeat of communism had upon third will also be assessed. The defeat of Southern states in the real world has been less obvious than that of communism, and their defeat will be discussed in section which follows this introduction. The defeat of communism in real will be assumed, this struggle being too broad to fit within parameters of paper. The Southern defeat took place in arena of political economy, and it will be discussed in context of oil shocks and economic policies of Reagan administration. …