The dollar weakened against a basket of major currencies on Thursday, posting its steepest one-day drop in over two weeks, due to lower U.S. bond yields and uncertainty over the timing of the Federal Reserve's next interest rate increase. The greenback posted losses for a second day, retreating further from a one-month high set during a winning streak where it touched a five-week peak versus the euro and a 2-1/2 week high against the Japanese yen. Traders have scaled back bets on a looming U.S. rate hike as they concluded Fed Chair Janet Yellen did not deliver enough conviction at her economic testimony before ... (full story)