600 left France to join ISIS, 800 more want to, says French PM :
French Prime Minister Manuel Valls said on Sunday that 600 people have already left France to join Islamic State and approximately 800 more want to do so in the future despite the fact that ISIS has suffered battlefield defeats in recent months. Ref. Source 2y.
France closed 20 mosques, prayer halls since December:
French authorities have closed around 20 mosques and prayer halls considered to be preaching radical Islam since December, according to the country's interior minister. He went on to promise that "There will be others." Ref. Source 4c.