Donald Tusk, the President of the European Council, on Thursday warned Theresa May and Mr Juncker that Brexit negotiations could become "impossible" if they become "emotional".
However despite the call for calm Mr Juncker, the President of the European Commission, told a conference in the Italian city of Florence that Brexit is a "tragedy". (+ video) » | Steven Swinford, Deputy Political Editor | Friday, , May 5, 2017