The drone attack caused a fire in the industrial area where the large Ruwais refinery is located.
Owner Abu Dhabi National Oil Co. is investigating damage to its facilities. The refinery has a production capacity of 922,000 barrels of oil per day.
According to Bloomberg's sources, the region's four major oil countries - Saudi Arabia, Iraq, the United Arab Emirates and Kuwait - have already reduced production by a combined 6.7 million barrels per day ahead of the fire.
This corresponds to a one-third reduction in production compared with levels before the US and Israeli attack on Iran on February 28 and Iran's subsequent counterattacks on targets across the Middle East.
What do you think?