Stephen Sackur talks to former Polish Foreign Minister Radek Sikorski about Britain's Brexit vote. An awful lot of powerful people in Britain and the rest of the European Union have joined the 'don't panic' chorus. But how persuasive are they. How confident can we be of the UK’s future, or indeed the EU's? Could British voters have kickstarted the unravelling of the EU?

(Photo: Former Polish Foreign Minister Radek Sikorski. Credit: John Thys/AFP)