Ukraine and the Energy Union: Exploring potential for cooperation with Slovakia and the Visegrad Four Date: July 28, 2017 Author(s): Duleba Alexander, , Dyachenko Serhiy, Gonchar Mykhaylo, Hirman Karel, Chubyk Andriy, Lehotský Lukáš, Ponomarenko Ihor Language: English Work type: Book Publisher/institution: Slovak Foreign Policy Association (SFPA) Link to Original Document February 12, 2020