OPEC Secretary-General Abdalla Salem el-Badri. EPA VIENNA—Amid a continuing slide in global oil prices, the head of OPEC has said political insecurity in Iraq and Libya could affect the oil-producing cartel’s future output prospects. In an interview at the Organization of the Petroleum Exporting Countries’ headquarters, Secretary-General Abdalla Salem el-Badri said that while Iraq has great potential to grow oil production, it needs to solve its security problems. “If there is no security, there will be no investment,” he said. “If there is no investment, there will be no additional supply.” Iraq has long-held plans to triple its oil production capacity to 9 million barrels a day by 2020, meaning it could expand output at the fastest rate of any of OPEC’s 12 member nations. But the rapid advance of the insurgent Islamic State movement in the West of the country has cast doubt on its target—though the rebels […]