Peter Bergen: Terrorists have turned to a frightening weapon that often is within easy reach and is particularly hard to guard against: Using cars and trucks as killing machines
원문출처 : http://www.cnn.com/2016/12/20/opinions/berlin-truck-killing-machines-bergen/index.html
원문출처 : http://www.cnn.com/2016/12/20/opinions/berlin-truck-killing-machines-bergen/index.html