LONDON — The UK government's position papers for Brexit negotiations are not "satisfactory," European Commission President Jean-Claude Juncker has said. Talking at a conference of EU diplomats on Tuesday, Juncker said that there were an "enormous amount of issues" still to be resolved in Brexit negotiations, which restarted this week. His comments follow the EU's chief negotiator Michel Barnier saying on Monday that Britain "must start negotiating seriously." Theresa May's government has published a number of position papers and "future partnership papers" in the past fortnight, including plans for the Irish border, the UK's future relationship with the customs union and the jurisdiction of the ...