The multiple, simultaneous explosions that took place on the London transportation system were the work of perpetrators who had an operational capacity of considerable scope. There was careful planning, intelligence gathering, and a sophisticated choice of timing as well as near-perfect execution. We are faced with a deadly and determined adversary who will stop at nothing and will persevere as long as he exists as a fighting terrorist force. We are in the throes of a world war, raging over the entire globe. We are in for the long haul and we must brace ourselves for more that will follow. The executives must be empowered to act resolutely and to take every measure necessary to protect the citizens of their country and to carry the combat into whatever territory the perpetrators and their temporal and spiritual leaders are inhabiting. The rules of combat must be rapidly adjusted and international law must be rewritten to permit civilization to defend itself. There is no doubt that international cooperation is essential. Yet this cannot replace the requirement that each and every country effectively declare itself at war with international Islamist terror and recruit the public to involve itself actively in the battle.