FILE - In this Oct. 8, 1973, file photo, oil ministers of six Persian Gulf countries and representatives of western nations meet in Vienna, Austria, to negotiate price boosts sought by oil producers. Facing each other, are from left to right, Dr. Jamshid Amouzegar, then Iran Finance Minister, then Saudi Oil Minister Ahmed Zaki Yanani. Yamani, a long-serving oil minister in Saudi Arabia who led the kingdom through the 1973 oil crisis, the nationalization its state energy company and later found himself kidnapped by the assassin Carlos the Jackal, died Tuesday, Feb. 23, 2021, in London. He was 90. (AP Photo, File)