 Ahavuye isanamu, Reuters Ibihugu vyinshi biri mu mugwi wabanywanyi batobato ba Opep barashigikiye iyo ngingo yo kugabanya umwimbu igihe basanze igiciro carakorotse kuva ku 110 akagunguru mu myaka ibiri iheze bitewe nukwimbura ibitoro birenze urugero. 