The United Kingdom is about to make history and leave the European Union. It's a historic fork in the road - taking the UK in a new direction, and maybe Europe too. Many on both sides didn't think it would come to this, even after Britain's Brexit vote in 2016. But it did. Stephen Sackur is in Luxembourg, interviewing Jean-Claude Juncker; he was the President of the European Commission through the Brexit drama. What will Brexit mean for Britain and the European project?
