Reuters | Non-OPEC yet to pledge concrete oil output steps after meeting OPEC Reuters VIENNA Non-OPEC producers made no specific commitment on Saturday to join the Organisation of the Petroleum Exporting Countries in limiting oil output levels to prop up prices - a stance that suggested they wanted OPEC to solve its differences first. OPEC officials fail to agree on how to curb oil supplies Why US Oil Production Defeats Any Russian-OPEC Deal Oil price recovers $50 level on Venezuela unrest |