"The issue of radicalization remains particularly problematic in Belgium and the United Kingdom, say two researchers from the European Policy Center who have studied the links between crime, imprisonment and jihadism in ten European countries. In their recommendations to all the countries in which the study was conducted (Belgium, France, Germany, the Netherlands, Kosovo, Macedonia, Ireland, Sweden, England and Albania), Ian Acheson and Amanda Paul estimate that It is also necessary to train teachers better and to increase supervised extracurricular activities (sport, art, culture) which are "powerful antidotes" against exclusion, which ultimately can lead to delinquency and / or radicalization."