The US government has warned its citizens in an official travel advisory to be vigilant travelling in Europe and the United Kingdom's Foreign office has also warned of a "high threat of attacks in France and Germany: The fears it seems are of an al-Qaeda commando-style attack and the Eiffel tower was evacuated twice in September after false alerts. So how serious is the danger and where exactly is it coming from?
A debate with Melissa Bell and guests:
Christopher DICKEY, Paris Bureau Chief and Middle East Regional Editor, Newsweek
Paul WILKINSON, Chairman of the Centre for study of terrorism and political violence and
Professor of international relations, University of Saint Andrews (By phone from St Andrews, Scotland)
Rolf MOWATT-LARSSEN, Senior Fellow at the Belfer Center for Science and International Affairs, Harvard University (Via satellite from Harvard University, USA)
Programme prepared by Yi Song and Perrine Desplats