(L-R) Slovak Prime Minister Robert Fico, European Council President Donald Tusk and European Commission President Jean-Claude Juncker hold a press conference after an informal European Union (EU) summit in Bratislava, Slovakia, Sept. 16, 2016. EU members on Friday issued a joint declaration, formulating a road map for the bloc to tackle challenges, said Slovak Prime Minister Robert Fico. (Xinhua/Gong Bing)