You can't bomb them into the 21st century. No matter what you do, their culture will win out. Someone said that culture is fate. It really is. There's no escaping it. Bombing their government buildings, as you suggest, will have no effect whatsoever. They won't magically start respecting women's rights or stop executing gays.
Their advantage is a strong belief system accompanied by a strong social structure, an apparent willingness to carry out any inhumane and bloodthirsty crime against innocents anywhere, and to protest at any slight real or perceived. This is already frightening us into appeasement.
Our advantage is advanced weaponry and we are failing to use it. We do not have a fall back system.
Maybe bombing their leadership on a grander scale won't work, but the drones seemed to have some value for a while. I'd say its worth a try.
Some of those countries have powerful allies. I prefer a strategy that makes a potential world war least likely.
The US has, or had, powerful Allies also. Why are they more powerful than us?
A world war would be extremely unlikely if we seriously set out to win it.