Asian shares dip as hopes for China stimulus rise

Asian shares were in a defensive mode on Tuesday after Wall Street fell overnight and U.S. short-term bond yields rose to six-month highs, though still-vague hopes of a new stimulus plan in China could improve investor sentiment. Short-dated U.S. Treasuries prices wobbled as investors grew nervous that the Federal Reserve may raise interest rates sooner than expected, following comments last week from Janet Yellen, the bank's new chief. That followed a…