Who was Ayatollah Ruhollah Khomeini? What impact did he have on the oil industry?

Khomeini was an elderly Shiite cleric exiled in Iraq. He hated the US spoke of vengeance. Exiled from Iraq, Khomeini worked in Paris to return to Iran. The political struggle that resulted from the Shah's absence and Khomeini's return sent the world into the Second Oil Shock. In 1979, Iran resumed exports but at a lower level, which sent ripples of effects throughout the world.