Welcome to the Companion Website for International Relations. Authored by Tami Jacoby of the University of Manitoba, this Companion Website is specifically designed to accompany the Canadian Edition of International Relations by Joshua S. Goldstein and Sandra Whitworth. International relations is the study of the interactions among the various actors that participate in international politics, including states, international organizations, nongovernmental organizations, subnational entities, and individuals. Introduction to International Relations (POLS 175). And perspectives in international relations (idealism. 2013-2014 Update Edition. Pearson Longman.