Iran’s Supreme Leader Ayatollah Ali Khamenei on Saturday backed President Hassan Rouhani’s suggestion that Iran may block Gulf oil exports if its own exports are stopped and said negotiations with the United States would be an “obvious mistake”. Rouhani’s apparent threat earlier this month to disrupt oil shipments from neighboring countries came in reaction to looming U.S. sanctions and efforts by Washington to force all countries to stop buying Iranian oil. “(Khamenei) said remarks by the president … that ‘if Iran’s oil is not exported, no regional country’s oil will be exported,’ were important remarks that reflect the policy and the approach of (Iran’s) system,” Khamenei’s official website said. Iranian officials have in the past threatened to block the Strait of Hormuz, a major oil shipping route, […]