Iran’s supreme leader on Tuesday ruled out negotiations with the US “at any level”, as tensions mounted between the arch-foes after Washington blamed Tehran for attacks on Saudi oil installations. Ayatollah Ali Khamenei said the US adopted a policy of “maximum pressure” on Iran because it believes it cannot bring the Islamic republic to its knees through other means. The leader was speaking after devastating drone attacks at the weekend that halved oil output of Iran’s regional arch-rival Saudi Arabia — the world’s top crude exporter.
