The images match the worst of Islamic State group's atrocities: black-clad fighters and an English-speaking jihadi taunt the West before slaughtering their victims in orange jumpsuits on a Libyan beach.
Their masked leader turns to the Mediterranean and points a bloodied knife toward Europe, declaring: "We will conquer Rome, God willing."
The execution of 21 Egyptian Christians by militants in Libya proclaiming allegiance to Islamic State was an announcement that the group, also known as ISIS or ISIL, has spread from Syria and Iraq to Libya. Militants have profited from chaos to claim a North African outpost a boat ride away from Italy's coast.
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