Option 2) Use the billions already spent on nuclear devices to deliver a devastating neutron blast on the target(s).
Both option 1 & 2 result in an immediate response of launching pretty much anything and everything to turn your country into a irradiated parking lot, no matter what the occupier of the White House might have to say about the matter.
To counter this threat, we again make up theories as to what might actually work and deploy it nationally, spending trillions on a possibility that is far less likely than a nuclear exchange.
Then again, we spend billions with McAfee for protection against trojans, viruses, and other programs that are only likely if the user is actively visiting sites that involve illegal activities. In exchange, we sacrifice roughly 20% of our normal computing power and 15% of our computing memory to their bloatware - which actually doesn't work against anything new until after it has already delivered it's payload.
Well, aren’t you the little corner of sunshiney optimism today? :)