Oil prices today climbed on the back of looming US sanctions against Iran and OPEC's reluctance to jump near four-year highs. Brent crude futures LCOc1 were traded 0.3% higher at $81.45/barrel. WTI crude futures CLc1 were priced 0.3% higher at $72.27/barrel. While the fresh wave of US sanctions targeting petroleum sector will probably hit Iran in November, OPEC and Russia have rebuffed all calls to increase supply.