How well OPEC complies with its own decision to reduce its crude-oil production by 1 million barrels per day will determine the impending overall international impact on prices. Ministers of the Organization of Petroleum Exporting Countries, meeting in Cairo Friday, voted to leave their 27 million bpd production quota intact and instead will rein in the chronic overproduction of crude that in recent weeks has resulted in an average of an extra 1 million bpd being placed on the market, causing prices to soften. "Member countries, which have responded to the market need for additional supply over the course of...