Bulgarian Prime Minister Boyko Borissov, standing centre right, greets EU commissioner Dimitris Avramopoulos, centre, as EU officials take their seats during he first plenary session of the Bulgarian Presidency of EU Council in Sofia, Friday, Jan. 12, 2018. Priorities of Bulgaria's presidency are the future of Europe's young people, the integration of the Western Balkans into the EU, European security and stability and the digital economy. (AP Photo/Valentina Petrova)