Yellen rate comments boost dollar

Comments by Federal Reserve chief Janet Yellen that an interest rate increase will likely be appropriate "relatively soon" gave a further shot in the arm to the dollar on Thursday. In testimony prepared for delivery to the Joint Economic Committee of Congress, Yellen said a rate hike would be appropriate as long as there is further evidence of progress in the economy. The comments sent the dollar climbing against the yen and recovering losses against the euro as it reinforces expectations among