Taking on the terrorists

Groups such as Europol identify clues that help predict who the possible terrorists of the future could be. Cormac O’Keeffe talks to Pat Byrne, the head of Europol’s US office

Pat Byrne is searching for pointers: Any clues that could prevent murderous acts of terrorism.

Along with his European and American colleagues, he is searching for markers that will highlight those ordinary civilians who are on the path of violent extremism.