Joke Is on China as U.S.'s AAA Becomes Laughable: William Pesek

``Many investors still see China's monster currency stash as a strength. They reason that China is fortified against financial Armageddon. In reality, China is trapped and struggling to find exits that don't exist. Sell dollars for Greek debt? Right. Swap into Italian commercial paper? Perhaps not. Find enough spare Swiss francs to diversify into? Good luck. ''