Likely enough that Iran is working on that, if we're moderately lucky. EXTREMELY lucky would be, Iran only nukes San Fran.
VERY lucky would be, Iran just nukes Harvard or Yale.
Plain old lucky would be Manhattan.
(All lib power centers, you see.)
And speaking of power, VERY unlucky would be Iran goes for an EMP, and takes out our power grid; or makes dozens of suitcase nukes and takes out the heart of 20 cities at once.
I’ve thought about that, the downside would be the hundred or so good people in each socialist utopia, who would be killed.
The upside; within 20 minutes, Iran would not exist.
Since he has already given Iran the green light to build nukes, I opt that Obama further gives them our best ICBM technology, and also MRV warhead miniaturization technology - followed by the grid coordinates of the White House.