Energy and foreign policy. Tackling energy means being in it for the long haul. It can take years and years for a project to come to fruition - think of Nabucco or the trials and tribulations of the future of nuclear energy. In third countries, the responsible authorities come and go - a state may have radically changed its political identity before a project decided on by its predecessors starts to take shape. Choices and preferences evolve within the EU itself (for example, the German...