Bulgarian Prime Minister Boyko Borisov will participate in the European Council dedicated mainly to the outcome of the Brexit referendum on Tuesday and Wednesday.
The Council meeting in Brussels is not extraordinary and the agenda includes several topics, but Brexit is expected to dominate.
British Prime Minister David Cameron will explain the situation in his country after the historic decision.
There will be also an informal discussion about the practical implications of the decision of the British and a debate on the future of the EU.
The forum, which begins on Tuesday afternoon, will comment on further problems such as immigration, the EU-Turkey deal and others.