Energy security has become one of the most important issues on the agenda of the European Union since the second gas crisis of 2009 when Russian gas flows to Europe were interrupted in the course of Moscow’s dispute with Ukraine over transit fees and higher gas prices. Even though energy security is of importance for the EU as a whole, with the Commission estimating that the import dependency of the Union will reach 73-79 per cent by 2020 and close to 90 per cent by 2030, especially the new twelve member states will be affected by any decision Russia makes about future (oil and) gas exports.1 In particular the Visegrád countries face a number of common challenges that make cooperation within the V4 setting not necessarily obligatory but highly recommendable.