Asian shares stumbled on Thursday after Federal Reserve Chair Janet Yellen said a December interest rate hike in the United States is a “live possibility”, sending short-term U.S. bond yields to 4-1/2-year highs and pushing the dollar broadly up. MSCI’s broadest index of Asia-Pacific shares outside Japan dropped 0.5 percent, led by 1.2 percent fall in Australian shares. Wall Street shares also slipped on Wednesday, with S&P 500 Index falling 0.4 percent from a three-month high touched on Tuesday, driven by losses in the energy sector after a fall in oil prices.