But while Islamic State's Leader Abu Muhammad al-Adnani is dead, the terror group is far from defeated. As Islamic State’s spokesman, al-Adnani was also its most visible member. As head of external operations, he was in charge of attacks overseas, including Europe. Not-for-profit international policy organisation The Counter Extremism Project (CEP) has compiled a list of potential candidates who could potentially take over. The CEP, led by former world leaders and former diplomats, profiled the terrorists they believe could potentially fill the power void.