I am of the opinion it will take one HUMONGOUS crater (one ME country VAPORIZED) before the animals catch the hint. My candidates for that little lesson are Iran, Pakistan, and Saudi (Wahabbis) - the most vocal of rabid Jihadis. Pick a number as far as which one goes bye-bye first, but we're already surrounding Iran for that purpose.
At the present time there are about 17,000 murders in the USA every year.
That would easily qualify for a civil war in any one of those cities, yes? We could nuke them to save them, yes?