The investments needed to ensure stability in the global oil industry are returning after a downturn, but the pace is still slow, OPEC Secretary General Mohammed Barkindo said.  Barkindo was talking to Reuters and an Azeri TV station Real on the sidelines of an OPEC and non-OPEC monitoring committee, which is meeting this weekend in the Azeri capital of Baku. He also said leading oil producing nations have made significant achievements in terms of cooperation and efforts to avoid imbalance between the supply and demand on the global oil market. Barkindo added he would welcome greater engagement with the United States to tackle industry issues. According to estimates from Saudi Aramco Chief Executive Officer Amin Nasser last year, the global oil and gas industry needs […]