A police officer stands by a cordoned off street after a van crashed into pedestrians near the Las Ramblas avenue in central Barcelona, Spain, August 17, 2017.

Yesterday’s terrorist activity in Spain and ISIS’ thus far unsubstantiated public claim that the attackers were “soldiers of the Islamic State” has once again thrust the group to the forefront of the world’s attention—a place ISIS has occupied for years now. Indeed, in the summer of 2014, I was asked during a congressional hearing whether the Islamic State (also called ISIS), which had recently seized Mosul and was threatening Erbil, could capture Baghdad. Then deputy director of national intelligence, I replied that the intelligence community did not think such a takeover was plausible given what we knew about

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