I'll admit I've floated some sketchy nonsense from time to time, but certainly nothing like this monstrous imbecility.
Lieberman and Kyl spell it out for you; if America does not attack Assad now, the world will be overrun with bad people doing bad stuff.
Do you want that on your conscience?
Of course not. Therefore the only sensible thing to do is to call your congressman/senator/local paper and let them know that everyone you know and every decent American you can think of wholeheartedly supports the pending attack on Syria.