Spotlight: EU leaders give green light to 2nd phase of Brexit talks amid fears of tougher future negotiations

European Council President Donald Tusk speaks during a joint press conference with Estonian Prime Minister Juri Ratas and European Commission President Jean-Claude Juncker (not seen) after an EU Summit at EU headquarters in Brussels, Belgium, Dec. 15, 2017. Leaders of the 27 European Union (EU) members gathering here for the Winter EU Summit had approved the start of the second phase of Brexit talks, European Council President Donald Tusk said Friday. (Xinhua/Ye Pingfan)