In the past, oil price wars were short, sharp and, to those who profited from them, sweet. Now, an oil price war is a more cautious affair—assuming what OPEC is doing with its supply return is a price war, of course. And because most assume just that, all eyes are on the group’s chances of success. These are uncertain, to say the least, with most demand forecasts predicting a disaster for prices. OPEC and its friends from OPEC+ decided to start returning 411,000 barrels daily to the global oil market in May. Since then, they have agreed…