Now that the UK has voted to leave the bloc, the remaining 27 states will push hard to ensure their interests are protected in any future negotiations. Yet in planning a future without Britain, Mr Tusk and his colleagues will also have to take a long hard look at the EU's current economic model. Against a backdrop of low growth and high unemployment - especially amongst the young - some analysts believe the EU's long-term survival lies in taking bold economic steps. How radical does it need to be? Doctor Engelbert Stockhammer is Professor of Economics at Kingston University, and he joined Juliette in the studio, along with Professor John Weeks, Share Radio's regular economics commentator.