April 30 : Oil prices rose on Thursday on a report the U.S. is considering potential military action against Iran to break the deadlock in negotiations to end the war, increasing concerns of more supply disruptions to already curtailed Middle East exports. Brent crude futures for June rose $5.27, or 4.5 per cent, to $123.30 a barrel as of 0347 GMT after gaining 6.1 per cent in the previous session. The June contract, which has increased for a ninth day, expires on Thursday and the more active