London attack ringleader Khuram Butt was identified as a major potential threat leading to an investigation that started in 2015, UK counterterrorism sources tell CNN.
원문출처 : http://www.cnn.com/2017/06/06/europe/london-attacker-khuram-butt/index.html
원문출처 : http://www.cnn.com/2017/06/06/europe/london-attacker-khuram-butt/index.html