[VelociMorte]

Eva, Muslim fundamentalist terrorists follow no rules but their own. Their rules are as follows: "Kill anyone and everyone who does not agree with us, or anyone who gets in our way, by any means possible." In other words, they abide by no law, convention, or rule but their own. Our rules, our laws, our compassion, pity, sympathy, charity, ...all are seen as weakness, and are used against us. For example, we don't normally shoot at ambulances, and everyone knows this. It's in our "rule book". The bad guys read that book. They know that they can drive around in an ambulance, set up I.E.D.s, mortar the "good guys", shoot civilians, and create general hate and discontent with impunity, because to shoot at an ambulance is against everything we stand for. On the other hand, it's a "soft target" for the terrorist, so they don't have an issue with shooting at one, especially if it's full of helpless, wounded soldiers.
Here's another example for you: We, the "good guys", don't shoot at religious sites like mosques. Guess what? The bad guys know this, so they set up arms caches and staging areas in mosques. We have to wait until someone gets killed before we can return fire at a mosque.

We are fighting against an enemy that sees no wrong in blowing up a street-full of children to get at us. We are fighting an enemy that has no problem with kidnapping and beheading, rape, murder, mass execution, or torture. They will never stop, as long as they exist. One way or another, we have to see that they become extinct. We have to convince these terrorists and anyone who supports them that "terrorism" is an extremely hazardous undertaking with little chance of success, that brings with it a high probability of death, suffering, and the destruction of all they hold dear.