OPEC reaches first deal to cut oil output since 2008 - sources

By Rania El Gamal and Alex Lawler ALGIERS (Reuters) - OPEC agreed on Wednesday to cut its oil output for the first time since 2008, with the group's leader Saudi Arabia softening its stance on arch-rival Iran amid mounting pressure from low oil prices. "OPEC made an exceptional decision today ... After two and a half years, OPEC reached consensus to manage the market," Iranian Oil Minister Bijan Zanganeh was quoted by Iran's SHANA news agency as saying, without giving details. OPEC's informal me