The truth about Islamic State: what it is, where it is going, how we can fight it

By Paul McGeough
Updated March 7 2015 - 8:08am, first published 12:15am

In the light of late afternoon on a beach in Libya, the black-clad assassins of the so-called Islamic State are at work – they behead 21 Egyptian Christians and the barbarity is captured with all the high-tech wizardry of an MTV clip.

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