European officials say they are having trouble monitoring a growing roster of suspected extremists, as they try to zero in on which radicals pose the greatest threat and prevent them from committing terrorist acts.
WSJ.com: What's News Europe, Wall Street Journal: What's News Europe
Thu, 03/23/2017 - 8:08pm
European officials say they are having trouble monitoring a growing roster of suspected extremists, as they try to zero in on which radicals pose the greatest threat and prevent them from committing terrorist acts.