(CNN) — On Friday, ISIS claimed responsibility for Yemen’s deadliest terror attack. A day earlier it claimed responsibility for the worst terror attack in Tunisia. Last week it welcomed into the fold Boko Haram, a Nigerian terrorist group with thousands of fanatical fighters that dominates territory the size of New Jersey.
All this came in the wake of the group’s rapid expansion across Libya, its assimilation of a powerful Egyptian terrorist group, and the founding of small chapters in Saudi Arabia, Afghanistan, Pakistan and Algeria, where its new affiliate last year beheaded a French hiker.
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