Riyadh - Oil producers outside Opec must co-operate to boost falling crude prices as the cartel refuses to take responsibility alone, the Saudi oil minister has said.
"We refuse to take responsibility alone because (Opec) produces 30% of market output and 70% comes from outside," Ali al-Naimi said in remarks carried Monday by the Saudi Press Agency (SPA).
Crude prices slumped by about 60% between June and February, weighed down by a glut of global supplies and concerns about stalling demand.