"As I said, it needs a lot of money. It needs about 1 billion. It is very detrimental to the environment. If the American administration is ready to pay this money and take the responsibility of bringing toxic materials to the United States, why don't they do it?"
Assad denied that his forces were responsible for a chemical weapons attack in Ghouta, outside Damascus, on Aug. 21 that brought the United States close to attacking Syria in response.
Assad said it was too early to make a definitive comment on the U.N. report.
Asked whether he had a message for President Barack Obama, Assad said: "Listen to your people. Follow the common sense of your people. That's enough," in an apparent reference to opinion polls that show Americans oppose any U.S. strike on Syria.
Presented by Adam Justice