Summary: Is the stability and unity of the European Union threatened by internal migration? Over the past decade millions of people from the accession countries of Eastern Europe have taken advantage of the EU's integrated economic space to live and work in the union's richer countries. But now there are signs of a political backlash, not least here in Britain. Stephen Sackur speaks to the EU commissioner for Employment and Social Affairs, Laszlo Andor. Has Europe's freedom of movement gone too far?
