All that I'm doing is debunking your needless fear and panic that you've got yourself overwhelmed by.Nukes aren't easy to make, and not just any nation can build them. Nukes aren't easy to deliver, and not just everyone is going to be able to get them through our defenses.
Some conventional weapons can be delivered, however, and they can be built by multiple third-world nations. We'll probably see a few of them here before all of the dust settles, simply due to costs, timing, and the low technical abilities of our enemies. Those attacks and a few bio scares will probably cause a few more people to emulate your sky-is-falling attitude, but little more.