At first, the session of the Committee of Plenipotentiary Representatives of the Governments of the JINR Member States was held in Bansko. The historic event took place at the session: the Arab Republic of Egypt became a full-fledged JINR Member State.

Then the capital city of Bulgaria – Sofia – hosted a festive meeting of the Committee of Plenipotentiaries in which President of the Republic of Bulgaria Rumen Radev participated. The Sofia Declaration was adopted at the event.