Dollar rises on Fed comments but stocks waver

Asian traders moved cautiously Monday while the dollar rose on bets on a US interest rate hike this year after the Federal Reserve's vice chairman said country's economy was picking up. Stanley Fischer said Sunday the world's top economy was meeting all the Fed's targets and that growth would improve, hinting that borrowing costs could rise this year. Fischer was speaking as his boss, Janet Yellen, prepares to give a closely watched speech at the Jackson Hole gathering of global central bankers