Forget trade, Brexit 'existential' for Ireland - PM Varadkar

DAVOS, Switzerland (Reuters) - Britain's impending departure from the European Union is not just about trade for Ireland but is an existential issue for its nearest neighbour, Irish Prime Minister Leo Varadkar told Reuters on Thursday.The future of the border between EU-member Ireland and Northern Ireland, which will be the United Kingdom's only land frontier with the bloc after its departure, is proving the major hurdle in the ratification of the Brexit divorce deal in London.Police on both..