MarketWatch | Here's one thing that could scuttle an extension of OPEC's oil output cuts MarketWatch To most oil analysts and traders, an agreement to extend OPEC's oil production cuts seems like done deal. But there's still one thing that could derail the whole thing: A flare-up in tensions between Saudi Arabia and other key cartel members. The 13 ... Oil prices firm, on track for biggest gain in five weeks Goldman Bets Europe's Oil Stocks Will Shine as Crude Stays Murky Oil extends rebound on US inventory miss, output cut bets |