Should we actually be worried about the Syria-bound schoolgirls?

Are you terribly worried about those three London ‘schoolgirls’ who have gone off to fight for the Islamic State in Syria? I must admit I haven’t lost an awful lot of sleep over it. The BBC ran the story at interminable length on Sunday night, the implication seeming to be that we should strain every sinew to get the poor mites back home to their loving and undoubtedly well-integrated community. I don’t think they should be allowed back in any way, as it happens. And by and large, the more similarly disposed Muslims who feel an attraction to Isis actually go to Syria, the better, frankly. Or is this callous and unfeeling of me?