IS militants trying to inflame West-Muslim relations

Charles Grant, director of the CER, sees a congruence of interests between far-right anti-immigrant politicians and the Islamic State. Grant argues that jihadist militants want to provoke far-right politicians like Le Pen, leader of France's National Front, who even before the attacks was riding high in opinion polls.

"Islamic State want to get Marine Le Pen stronger," Grant says. "They want far-right attacks on mosques and a warlike ambience in Western countries, because the more Muslims are persecuted, the more Muslims will be motivated to pick up arms and fight in western Europe. Europe's game must be to resist that and not repeat the mistakes we made after September 11, which played right into al-Qaida's hands," he says. "We must hold our nerve and embrace our values of tolerance of faith and religions, which we share in common and against the Islamic State."