Like they say at the beginning of Law & Order, this question was inspired by actual events, but depicts no real persons or circumstances. In other words people, this is a hypothetical “what if” scenario, so let’s not get too bogged down in the techical minutea; let’s try to deal with the moral issues instead.
Okay. Let’s say the USA (or some hypotheicial nation if it makes the question more technically plausible) engaged a military enemy that was capable of striking back at us on our home soil. We’re talking a strictly conventional-weapons war here. We begin our offensive with the “smart bomb” technology we are currently using against Iraq, purposefully minimizing collateral damage against civilians and non-military infrastructure.
But say the enemy has no such capabilities. They send their bombers over our airspace and make a good-faith effort to hit only military and military-support targets. But because they are dropping bombs “WWII-style” they end up killing far more civilians and sinking far more jet-skis than we do.
Their leader makes a credible case before the world that, regrettably, this is the best their army can do. But they will not stop the bombing because they have the right to defend themselves and apply counteroffensive measures.
So, what does the USA (or that hypothetical country) do? Suck it up and take it? Disengage the targetting hardware on their bombs and let 'em fly willy-nilly just like the other guy. Trade them smart-bombs for dumb ones to spare our own population?
Personally, I think the “American Street” would go utter ape-sh*t times ten if they saw us taking out tanks in parking lots filled with baby carriages while all of Brooklyn burned in a failed attempt to hit Fort Hamilton. And I don’t know how the Pentagon would react to such an outcry.