Differentiation and integrity in studying international relations: analysis levels

The author shows that in international relations, similarly to international surveys, there exist simultaneously elements of homogeneity and heterogeneity. On the macro level the main elements of the problem of differentiation and integrity are defining the object and subject of studying, explanation of essence and contents of international relations, developing methodology of research regarding conceptual pluralism. On the mezo- and micro levels practical issues with applied character are considered.