Oil edges up as Tehran reviews U.S. proposal amid persistent uncertainty
Oil prices ticked higher in Asian trade on Thursday as Tehran considered a U.S.-backed plan to halt hostilities, yet persistent ambiguity kept market nerves taut. Brent for May delivery rose to $103.02 a barrel and U.S. crude climbed to $91.20, recovering from steep losses the previous session even as Iran denied direct talks with Washington and ke…