- Bulgarian prime minister Boyko Borisov at the opening ceremony of the Bulgarian presidency, at Sofia's National Palace of Culture, 11 January 2018 [9]
- Bulgarian Prime Minister Boyko Borisov with President of the European Council Donald Tusk in Sofia, 11 January 2018
- Bulgarian President Rumen Radev with President of the European Commission Jean-Claude Juncker in Sofia, 12 January 2018