Gold prices edged higher on Thursday, buoyed by a softer dollar and safe-haven demand fuelled by uncertainty surrounding US tariff policy and U.S.-Iran talks. Spot gold was up 0.3% at $5,183.85 per ounce, as of 0258 GMT. Bullion hit a more than three-week high on Tuesday. US gold futures for April delivery were down 0.5% at $5,200.50. “Price action reflects a re-pricing of fresh policy (t