If we are serious it might not be that bad idea to try to use nukes to counter global warming.

Controlled detonations of high-yield H-bombs in the middle of some desert might bring enough dust in the stratosphere to cool the Earth with a degree or two. The problem is that we're gonna have to do it on regular basis since aeorosols take several years to settle down.

Another climate manipulation aerosol idea is to use very sulphur rich aviation fuel on cruising height.
I guess this could also work after you make separate fuel tanks for take-off and cruise.

The only drawback I see is the aesthetically unpleasant view of black smoke tails coming from the planes in the sky... not that it is that high of a price IMO, but I guess it would cause resistance.

I hope to analyze the prospects for direct injection of H2S into the stratosphere as a way to make cooling aerosols.  Haven't gotten there yet, and it would be a last-ditch effort anyway (hazardous to ozone).
Another Climate aerosol manipulation Idea:

Look up into our American Skies and observe what our U.S.Air Force is doing to shade our country from extreme amounts of sunlight.Some call it chemtrails.The patterns from these high altitude spraying ops leave only one conclusion - It nain't commercial jets with contrails making a glaze over our continent.

Would you think Iran has the perfect conditions to generate the maximum dust/nuke?
Nope, but it will not astonish me too much if someone points out such an argument for pressing the button.