Saudi Arabia accused Iran of ordering this week’s attack on key oil facilities, stoking concerns that the world’s largest oil-producing region is edging toward another war.  The Houthi attacks on two Aramco oil pumping stations forced an important east-west pipeline in the kingdom to close and added to friction in the Gulf, where the U.S. has tightened sanctions against Iran, demanding it stop supporting paramilitary groups across the Middle East, including the Houthis. On this edition of the Big Picture we will analyse the fragile situation in the middle east