Terrorism has made our world an integrated community in a new and frightening way. Not merely the activities of our neighbors, but those of the inhabitants of the most remote mountain valleys of the farthest-flung countries of our planet, have become our business. We need to extend the reach of the criminal law there and to have the means to bring terrorists to justice without declaring war on an entire country in order to do it. For this we need a sound global system of criminal justice, so justice does not become the victim of national differences of opinion. We also need, though it will be far more difficult to achieve, a sense that we really are one community, that we are people who recognize not only the force of prohibitions against killing each other but also the pull of obligations to assist one another. This may not stop religious fanatics from carrying out suicide missions, but it will help to isolate them and reduce their support.

— Peter Singer