A worker drilling for oil using a hand-powered winch at a field in the Bago… Oil prices slid on Monday after key producers failed to negotiate a curb on their output, fueling concerns that this could hit the recent recovery in the crude market. Sunday’s failed attempt to implement a production freeze between Russia and members of the Organization of the Petroleum Exporting Countries in Doha threatened to undo a nascent rally that has lifted oil more than 50% from its February lows. On Monday, analysts debated whether declines in production from the U.S. and other producers will continue to support the market or whether the weekend’s failed deal will see more oil unlocked from OPEC nations like Saudi Arabia. Brent crude, the global oil benchmark, fell 2.5% to $42.01 a barrel on London’s ICE Futures exchange. On the New York Mercantile Exchange, West Texas Intermediate futures were trading […]