Russian Deputy Prime Minister Alexander Novak says Russia will extend oil export cuts of 300,000 barrels a day until the end of the year.。Novak said in a statement: "The additional voluntary reduction in oil exports is aimed at strengthening the preventive measures taken by OPEC + countries to maintain stability and balance in the oil market."。Russia has pledged to cut crude oil exports by 300,000 bpd in September, down from a 500,000 bpd cut last month.。Novak said last week that Russia and OPEC + partners agreed on further cuts in oil exports。