"Of course one of the things the last couple of years has shown is that making predictions about British politics or international politics is incredibly difficult at the moment. But I think the Conservative party - having started on the Brexit road - really is going to own the negotiations, is going to own the shape of Brexit. That is clearly going to be something that will be, if not the issue of the election, will be something that we will be standing on that record in terms of the party going into the next election."