Nataliya Esakova performs an analysis of the interdependencies and the nature of cooperation
between energy producing consuming and transit countries focusing on the gas sector. For the
analysis the theoretical framework of the interdependence theory by Robert O. Keohane and
Joseph S. Nye and the international regime theory are applied to the recent developments within
the gas relationship between the European Union and Russia in the last decade. The objective of
the analysis is to determine whether a fundamental regime change in terms of international
regime theory is taking place and if so which regime change explanation model in terms of
interdependence theory is likely to apply.