Oil prices extended gains on Tuesday as heightened concerns surrounding Iran and potential supply disruptions outweighed the prospect of increased crude supply from Venezuela. Brent futures rose 22 cents, or 0.3%, to $64.09 a barrel by 0430 GMT, hovering near a two-month high struck in the previous session. US West Texas Intermediate crude climbed 23 cents, or 0.4%, to $59.73. “The price