The purpose of this book is to move beyond the approach which views energy as a purely geopolitical tool of the Russian state and assumes a ‘one size fits all’ approach to energy security in Central and Eastern Europe (CEE). It argues that in order to fully understand Russian involvement in the regional energy complex, the CEE-Russian energy relationship should be analysed in the context of the political and economic transitions that Russia and the CEE states underwent. The chapters on individual countries in the book demonstrate that, although Russia has and will continue to play a substantial role in the CEE energy sector, the scope of its possible influence has been overstated.