President Tusk has invited EU leaders to an informal dinner ahead of the summit. This dinner is part of the Leader's Agenda and it will focus on digital Europe, research, and innovation, Iran nuclear deal and trade with the US. Boyko Borissov, Prime Minister of Bulgaria, will host the dinner at the Sofia Tech Park.
The agenda is available here.
Photos from the event will be uploaded here.
Videos from the meeting will be uploaded here.