Skuzzy,
That is certainly a concern, and one that affects a free society most: popular opinion. However, this is like no other war we've encountered, not even like Vietnam. This is about to be a guerrilla war on a world scale. The enemy has no official boundaries, and will move from country to country as needed. Financing will cross country, and political lines. There will be no easily discernible target, but many elusive ones, and they will be found just about anywhere, from the mountains of Afghanistan to a small town in the USA, or Europe, or Asia. The possiblility of a regular war against a nation hosting terrorists is certainly high, but what is a certainty is that the war will be fought in our own countries, ie USA, England, France, Germany, Russia, Japan, and the list goes on.
Colin Powell is of the mind that if we're to fight a war, we should fight to win. Since this is a war like no other, we should do everything we can to know what we are really fighting against, what effective resources are available now, and what resources need to be developed now. This is very sound military advice.