When will the oil war end? History signals a long wait

NEW DELHI: How long can the vicious oil-price war between Saudi Arabia and Russia last? If history is any guide, the battle will be a long one. Riyadh has waged four price wars, including the current one, over the last 35 years. All of them lasted at least a year, and prices plunged at least 50%. This time may be different, of course -- there’s never been a demand shock so...