Michael Krona, Assistant Professor in Media and Communication Studies, Malmö University.

Lyssna: Expert: Attacks aren't comparable to brutality of ISIS's daily torture and executions.

Michael Krona, who has spent three years studying ISIS propaganda, told Radio Sweden that he is not surprised by the cruelty of yesterday's attack in Barcelona given the shocking nature of the executions displayed in the terror group's propaganda.

"The cruelty of these attacks is not really comparable to the cruelty of the staged executions and torture that they have been doing for several years now," said Krona, an assistant professor in media and communications studies...