President Obama explicitly committed not to use nuclear weapons against nations who inexplicitly use biological or chemical weapons to obliterate the United States, as long as these nations are in compliance with the Nuclear Nonproliferation Treaty.
Walking a thin line in his explanation of how this might work, he added; "As you know, I, as your Commander-in-Chief, will either be in a safe bunker or flying above all this in Air Force One while you and your families will be dying like flies. While this may not seem fair to you, I want to remind you that I am President, and you are not."
"Even though you won't be around to witness this, I assure you that the rest of the world will be in awe of my compassion, and that once more the United States will be respected."
"Finally, for those of you who might be in disagreement with this, I suggest that you memorize the following poem:"
When the Bio and Chem weapons start falling from the sky, put your head between your legs and kiss your ass goodbye.