Majid Jafar, chief executive officer of Crescent Petroleum, pauses during a Bloomberg Television interview in London, U.K., on Monday, June 16, 2014. The conflict in Iraq is causing 'serious doubts' about the country's ability to achieve planned oil production and export increases, said the head of Crescent Petroleum, a closely held producer in the country. Photographer: Simon Dawson/Bloomberg via Getty Images