No indeed it does not have to be at all. It then simply becomes a case of me wanting to destroy the wasp's nest in your yard.

You see, you can have that nest there & I respect your property line. Then say, my hypotheical child gets stung. Turns out he's allergic & I ask you to do something about it. You refuse, saying that they're good for your flower garden. Then a month later they're swarming for some reason & my child ends up in the hospital & I notice you in your front yard snickering while we drive away in the ambulance...

Do you think that I'm going to ask permission to get rid of that nest now? Or do you think you'll find it in your mailbox, possibly next to your teeth?

I think this is a fair metaphor. Yes, I could call the police & have them deal with the neighbor & then wait & wait until something gets done, meanwhile my child could be stung a few more times. Or I could go & get rid of the nest myself & not say anthing, which leaves a righteously disgruntled putz living next door, just waiting for the chance to get back at me. OR I could solve the problem once & for all.

Let's spell it out. We're NOT going to have another Vietnam in Afganistan (if that ends up to be where we let loose the fury, as it appears now) since our objective will be different. The USSR was trying to OCCUPY Afganistan. All that we will want to do is what we did to Iraq, destroy their capacity for being a nuisance. We could accomplish most of that without ever landing on the ground.