The United States imposed sanctions on several companies, accusing them of enabling the shipment and sale of Iranian petrochemicals, the Treasury Department said in a statement.
US Justice Department accused Iran of "forcibly" boarding an unrelated ship after the four tankers were seized "in an apparent attempt to recover the seized petroleum."
Ankara has condemned a deal entailing oil extraction, processing and trade between Delta Crescent Energy and the PYD/YPG-linked SDF in Syria, saying it is equivalent to financing terrorism.
Ministers of the cartel and outside nations led by Russia meet via video conference to adopt the measure, aimed at cutting the excess production depressing prices as global aviation remains largely grounded due to the pandemic.
Prices rally as top producers say they would turn taps lower, while there were also hopes for a pick-up in demand as economies slowly reopen amid Covid-19 pandemic.
Primarily dependent on oil money, the Gulf economies are losing billions of dollars as the oil prices have hit the lowest points in history.
Due to the collapse in demand, storage tanks for oil are close to the brim at a key energy hub in Oklahoma, forcing traders to pay others to take delivery of the oil.
Thursday's Opec videoconference was part of a series of talks on stabilising the market, where oil prices have more than halved since the start of the year amid a pricing war between Saudi Arabia and Russia.
Kirill Dmitriev, one of Russia's top oil negotiators who also heads the sovereign wealth fund, says a deal is imminent, a month after oil prices tumbled due to the coronavirus pandemic and a price war between Russia and Saudi Arabia.
Oil prices have dropped by about two-thirds this year as the pandemic crushes demand and as major producers Russia and Saudi Arabia boost output in a war over market share.
Delegates of OPEC and other oil producers including Russia – together known as OPEC+ – have been in a "joint technical committee" meeting in Vienna this week to discuss cutting production, amid fears of the coronavirus situation.
Pemex is aiming to extract 69,000 barrels per day from the site by next year, and reach 110,000 barrels per day by 2021, the chief executive of the company says.
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