Hmmmmm.... How much CO2 is given off in a nuclear blast? Calculate that with the lifetime carbon footprint of a few million americans with 2.5 cars per family and the eventual stimulus in cleanup and reconstruction costs to repopulate in new one child only, 800 square foot eco-pod housing, and electric busses being the only transit system, and I'd say you have Obamatopia.
Yep, he's gonna nuke most of our cities. It's just a matter of carbon offsets.