U.S. Treasury yields edged lower on Tuesday morning, as investors reassessed the outlook for Federal Reserve interest rates and continued to monitor developments in the Middle East. At 4:37 a.m. the yield on the 10-year Treasury was 2 basis points lower at 4.321%. Yields on 2-year and 30-year Treasurys fell by 1 basis point and 2 basis points, respectively. One basis point is equal to 0.01%, and yields and prices move in opposite directions. The U.S.-Iran war continues to hold the attention of