Realism has been the dominant international relations theory for nearly seven decades focusing almost exclusively on power politics among states, but throughout these years the mankind has passed major technological, societal and economic transitions that also had their impact on the political sphere, including international politics. In public discourse these transitions are usually associatied with the terms “information society” or “global information revolution”, whereas political scientists from their part started to use such concepts as “informational (or soft) power”, “information warfare”, or “information security”, refering to a qualitative change in the nature of these traditional variables in political analysis. This article focuses on power, the main variable in the (neo)realist perspective, thus revising the relevance of the theory itself in the context of the information revolution of the 21st century. Although national power resources and consequently international power politics have recently been transforming and taking new forms, mostly involving soft power instruments and the modernization of national economies and militaries, the fundamental (neo)realist assumptions about the competitive nature of international politics are still valid in the information age.