According to Bank of America's Hartnett, the biggest risk currently stems from the rapid appreciation of the Japanese yen, South Korean won, and New Taiwan dollar, which could lead to a reversal of capital outflows in Asia and pose a threat to the liquidity environment in global markets. Hartnett is optimistic about the long-term prospects for international equities and gold, with China being his most favored market. He also predicts that gold may break through its historical high, reaching over $6,000 per ounce.