
The United States revoked a temporary sanctions waiver for Iranian oil Tuesday after three tankers were struck in the Strait of Hormuz, raising pressure on Tehran as it negotiates with Washington over ending the Middle East war.
The US Treasury Department canceled a licence announced in June that had allowed Iran to produce, sell and deliver crude oil and related products through August 21.
‘Iran's actions in the Strait were wholly unacceptable to the United States and will be met with consequences,’ a US official told AFP.
The official, speaking on condition of anonymity, said the US-Iran memorandum of understanding was ‘entirely performance-based,’ warning that Tehran would see benefits only if it showed ‘good behaviour.’
But US negotiators were continuing to work ‘in good faith towards a final deal,’ the official said.
The attacks, which ended more than a week of relative calm, revived concerns over freedom of navigation after Iran lifted its blockade of the vital waterway following a fragile ceasefire with the United States.
Oil prices rose by more than 2% as the renewed attacks reignited worries over global energy supplies and cast doubt on the durability of the US-Iran agreement.
‘We are now in a sensitive period where potential alternatives to an Iranian toll or fee system are being explored,’ Andreas Krieg, a security expert at King's College London, told AFP.
‘Iran is sending a clear signal that no alternative will be accepted.’
Krieg said tankers trying to diverge through the Omani maritime corridor without registering with Iran would be punished, and called the attacks a ‘clear violation’ of the ceasefire agreement and international law.
Maritime traffic had tentatively resumed after Washington and Tehran signed the memorandum last month, but Iran has insisted there will be no return to pre-war arrangements, under which vessels could pass freely through the strait.
Under the 14-point US-Iran memorandum, Iran and Oman, which border Hormuz, must hold talks ‘to define the future administration and maritime services’ in the waterway with other Gulf states.
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