No, they don't have to come from somewhere, that's why we have a much higher debt than before. We just borrow it.
Now I'm going to make you look like even more of an idiot:
1)
http://www.foxnews.com/story/0,2933,120137,00.html
A sarin canister was rigged as an IED, it came from an Iraqi warhead. It could have killed upwards of 50,000. There was mustard gas found also. Oops, you lose.
2)
http://www.gpoaccess.gov/911/
The 9/11 report in it's entirety. You didn't read it. All you read was dailykos. The 9/11 report specifically states that Iraq DID have ties to Al Queda, and lists the specific links, but says that Iraq did not have any demonstrateable ties to Al Queda's efforts leading to 9/11. You lose again.
AND, just because I don't trust you to be intelligent enough to handle this post without pretty pictures, here's a photo of Iraq's Spymaster Ahmed Khalil Ibrahim Samir AL-ANI meeting with 9/11 hijacker Mohammed Atta in prague.