Russian oil prices are at $71 right now per barrel, and the losses of its shadow fleet will be very bad. I'm not sure what this will do to prices, but it would mean much lower exports. If the oil exports really decrease then oil prices will decrease as well, and baically, russians will drive more and use more oil. I think that ukraine should keep up with the attacks and starve the oil companies. The increased use of oil within russia ( if oil exports decrease) will be somewhat "wasted" on unecessary car trips and so forth. Keep it up ukraine. It will take a thousand stings for Russia to feel any pain whatsoever, but Ukraine is getting there. They must keep atacking.