Reuters | Oil prices slide over worries Middle East rift will undermine output cuts Reuters With oil production of about 620,000 barrels per day (bpd), Qatar's crude output ranks as one of the smallest among the Organization of the Petroleum Exporting Countries (OPEC), but tension within the cartel could weaken an agreement to hold back ... Oil falls a third day on worries Middle East rift could dent output cuts Oil prices finish lower after Middle East countries cut Qatar ties Oil prices skid after Arab nations cut ties with Qatar |