This study sheds light on European-Russian relations in the energy field, a complex relationship where the political, economic, and social interact. Russia, today, is a key partner in European security issues, and it is impossible to talk about European security without addressing the Russian role and its effect on the European security system. Russia is also the largest exporter of energy to Europe and its main trading partner. The EU, conversely, is the largest consumer of Russian energy exports, and the EU states have important trade relations with Russia. All this makes European-Russian relations in the energy sphere subject to tension between pressure for cooperation and conflict over interests in the balances of power in the international order.