Yup. I'm all for dropping absurd amounts of leaflets informing the population of EXACTLY what is going to happen if they do not redress their government.

When they don't, start vaporizing one city per week and dropping more leaflets on the next cities telling them of what's happening and which city was just vaporized. It won't take long till their military realizes if they don't turn on their government then all their loved ones are next.

When they realize they will be vaporized and there is literally nothing they can do about it to save their lives and the lives of their loved ones other then turn on their government it turns into a great motivator to turn on their government.

It would cost far fewer lives overall to vaporize a medium city or two then to start a long drawn out ground war that's going to see those cities shelled into husks with mass deaths anyway. At least being vaporized by a nuke is far faster a death then being firebombed and burning to death or starved to death.