Oil lingers around $50 over doubts OPEC can coordinate output cut

By Henning Gloystein SINGAPORE (Reuters) - Oil prices were stable on Thursday, lingering around $50 a barrel, as doubts over OPEC's ability to organise a coordinated production cut weighed on markets, while firm demand and concerns over Venezuela's stability offered support. International Brent crude oil futures were trading at $50.09 per barrel at 0540 GMT on Thursday, up 11 cents from their last close. Traders said Brent was struggling on doubts that the Organization of the Petroleum Exporting