Oil prices rose on Monday as investors focused on the impact of U.S. sanctions on Iran despite assurances by Washington that Saudi Arabia, Russia and the United States could together raise output fast enough to offset falling supplies. U.S. Energy Secretary Rick Perry said in an interview with Reuters on Friday that he did not expect any price spikes and that the world’s top three oil producers could between them raise global output in the next 18 months. Brent crude oil was up 45 cents a barrel at $78.54 by 0830 GMT. U.S. light crude was up 45 cents at $69.44. Iran’s oil exports have been falling in recent months as more buyers, including its second-largest buyer India, cut imports ahead […]