The price of oil hit its highest level in more than seven years on Tuesday as traders worried that an attack on a fuel storage facility in the Middle East could affect supply.
A suspected drone attack by Yemeni Houthi rebels in the United Arab Emirates blew up three fuel tankers.
Three people were killed in on Monday's attack near Abu Dhabi airport.
A Saudi-led coalition retaliated with airstrikes on the Yemini capital of Sanaa, killing as many as 20 people.
The surging price of oil is also thought to be partly down to growing optimism for a speedy global economic recovery from the coronavirus pandemic, which would increase demand for the fossil fuel.
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