Iran could be on the verge of a major oil market comeback as a proposed U.S.-Iran agreement opens the door to sanctions relief and renewed energy exports. Under the reported framework, Tehran would be allowed to resume oil sales, shipping, banking and insurance activities if it complies with nuclear and maritime commitments. Analysts say the deal could unlock billions of dollars in revenue and rapidly increase Iranian crude exports. Reports also suggest the first Iranian supertankers have already resumed shipments after months of disruption. The developments could reshape global energy markets and strengthen Iran's economic recovery.