Research in the field of international relations and European studies agree more or less on the effect of the European Union on the foreign policy and energy policy among European countries. These studies in terms of logic of consequences or logic of appropriateness and the force, cost–benefit calculations, persuasion and socialization mechanisms, observe change or evolution of the internal structures, identities, preferences of national and foreign policy and national patterns of governance and European countries interests by European Union. In this regard, the Europeanization of foreign policy more or less led to their compliance with EU standards in the field of "conservation of shared values" ,"fundamental interests", "preserve peace and strengthen international security," "promoting international cooperation" and "European diplomatic culture". Europeanization of energy policy that based on the principles of energy security, competitiveness, environmental sustainability and social responsibiliy, also has led to institutional and policymaking compliance of these countries with the EU energy policy.