evidence: Who was Abu Bakr al-Baghdadi, and how did he manage to turn ISIS into one of the world's most fearsome terror organizations? He made the organization completely at home in the digital age. [...] To another story now. Abu Bakr al-Baghdadi was not the first commander of ISIS, but he was the one in charge when the group steamrolled into Iraq and Syria in 2014. That land grab allowed it to declare a state, an outlaw territory that drew thousands of recruits from around the globe. Now that President Trump has declared Baghdadi dead, NPR's Hannah Allam looks at his bloody legacy and what his death means for a movement that is trying to make a comeback. [...] CRONIN: Anyone who thinks that the killing of al-Baghdadi is going to end ISIS really hasn't understood the nature of the group and really hasn't been doing - reading its history.