Gold prices nudged lower on Wednesday, as rising Treasury yields and a firm dollar outweighed optimism over a potential U.S.-Iran peace agreement. Spot gold was down 0.3% at $4,467.59 per ounce, as of 0233 GMT. In the previous session, bullion hit its lowest level since March 30. US gold futures for June delivery lost 0.9% to $4,471.10. “Gold is running out of puff somewhat against th