Oil prices jumped on Monday as the United States looked set to announce that all buyers of Iranian oil must end their imports or be subject to sanctions. Brent crude futures rose as much as 3.3 percent to $74.31 a barrel, the highest since Nov. 1, before easing back to $73.62 by 0647 GMT, which was still up 2.3 percent from their last close. U.S. West Texas Intermediate (WTI) crude futures climbed by as much as 2.9 percent to $65.87 per barrel, the most since Oct. 31. They were at $65.41 at 0647 GMT, up 2.2 percent from their previous settlement. News that the United States is preparing to announce on Monday that current buyers of Iranian oil would no longer be given waivers to […]