For that reason, it is difficult for those who are trying to combat terrorism to prove how effective they are, but I think we could safely say that, if the terrorists had their way, this place would have been blown up long ago.
Pour cette raison, il est difficile pour ceux qui tentent de combattre le terrorisme de prouver leur degré d'efficacité, mais je crois que nous pourrions dire sans danger que si les terroristes pouvaient agir à leur guise, cet endroit aurait explosé il y a longtemps.