I strongly vote for #1. The attack, while tragic, was small-scale, and should not be treated as anything else as organized crime. Have the police find all responsible and bring them to justice. Anything else is basically doing what the terrorists want you to do - overreact.<p>We should learn from the mistakes of the United States: two long, bloody and expensive wars, bombing third country and terrorizing fourth, mass surveillance and transportation security theatre - all tallying up to <i>orders of magnitude more innocent deaths</i> than caused by 9&#x2F;11 attacks, which themselves amounted to something around 3-4 month&#x27;s worth of traffic-related deaths in the US.