Vice President of the Commission for the Energy Union Maros Sefcovic gives a joint press conference after meeting with Russian energy minister and Ukraine's minister of foreign affairs representatives at the EU headquarters in Brussels on January 21, 2019. (Photo by John THYS / AFP)

Vice President of the Commission for the Energy Union Maros Sefcovic gives a joint press conference after meeting with Russian energy minister and Ukraine's minister of foreign affairs representatives at the EU headquarters in Brussels on January 21, 2019. (Photo by John THYS / AFP)

Vice President of the Commission for the Energy Union Maros Sefcovic gives a joint press conference after meeting with Russian energy minister and Ukraine's minister of foreign affairs representatives at the EU headquarters in Brussels on January 21, 2019. (Photo by John THYS / AFP)

Ukraine's Minister of Foreign Affairs Pavlo Klimkin talks during a press conference after a meeting with Russian and Ukrainian representatives at the EU headquarters in Brussels on January 21, 2019. (Photo by John THYS / AFP)

Ukraine's Minister of Foreign Affairs Pavlo Klimkin talks during a press conference after a meeting with Russian and Ukrainian representatives at the EU headquarters in Brussels on January 21, 2019. (Photo by John THYS / AFP)