1430 ET - Treasury yields and the dollar rise despite a drop in oil prices accentuated by the U.S. plan to use economic sanctions against Iran. Rising oil prices had been behind a bonds selloff that pushed yields, particularly in the long end, to highs not seen since the financial crisis. But since the Treasury announced plans to buy back more long-dated securities last week, demand for bonds increased somewhat, keeping yields below recent highs. Sticky inflation and rising government debt keep bond investors on their toes, preventing a steeper fall. The WSJ Dollar Index rises 0.2%. The 10-year is at 4.70%, up from an intraday low of 4.68%.