adopted and on the specifics of tactics and timing, even where the strategy is acceptable to all the members. Such differences had cropped up in 1976 regarding the quantum of price increase when Saudi Arabia and UAE opted for a 5 per cent increase and others for a 10 per cent increase, and again in 1981 when Saudi Arabia preferred the Marker crude to be priced at $ 32 per barrel, while others wanted the price to be $ 36 per barrel. In 1983, it required four meetings at Vienna (December 1982), Geneva (January 1983), Riyad (February 1983) and London (March 1983) before OPEC could decide to cut the price of Marker crude by $ 5 and set it at $ 29 per barrel, and the production to a ceiling of 17.5 mbd.
