Responding to Terror in the Aftermath of the Manchester Attack

Shaky cell-phone videos of the aftermath of the attack. Wrenching images of innocent victims. Condemnation from world leaders. The pattern is grimly familiar. In the days ahead, the background of the Manchester bomber will be probed. Investigators will study how he was trained and financed. Questions will be raised about missed warning signs. The search for co-conspirators will span cities, countries, and perhaps even continents.