There are signs that Saudi production could be hampered for an extended period, and two Saudi sources familiar with the kingdom's oil operations told CNN Business that fully restoring production "will take weeks, not days".
Iran said on Monday there would be no meeting between Iranian President Hassan Rouhani and his US counterpart Donald Trump at the United Nations, Iranian state television reported, after the White House on Sunday left open the possibility of a potential meeting.
Saudi Arabia has spent billions on military hardware but recent events have underscored its infrastructure's vulnerability to attack.
Later, Trump pointed out that the White House knew who the culprit was and was "locked and loaded".
American officials released satellite images of the damage at the heart of the kingdom's crucial Abqaiq oil processing plant and a key oil field, alleging the pattern of destruction suggested Saturday's attack came from either Iraq or Iran - rather than Yemen, as claimed by Iranian-backed Houthi rebels there.
Iran's Foreign Ministry described Pompeo's remarks as "blind and fruitless accusations".
The opening of its secretive accounts was created to increase transparency ahead of the IPO which is the cornerstone of de facto leader Crown Prince Mohammed bin Salman's "Vision 2030" reform plans for the country.
The response from the financial markets to the oil field drone strike was swift and sharp.
"The Saudis do not want an open conflict with Iran".
´Genie is out of the bottle´.
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Canberra has said that consular assistance was being given to the three detainees. The academic specialises in Middle East politics with a focus on Gulf states.
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Police have detained 89 people since Friday, bringing the total arrests to 1,453 since the protests started in June, he said. Protesters wave U.S flags as they gather ahead of a pro-democracy march in Hong Kong on September 15, 2019.
Benchmark Brent crude had been trading at just above $60 a barrel.
With some of Aramco's largest oil facilities now out of commission, Saudi officials are now considering delaying the company's IPO, according to The Wall Street Journal.
There was a bit of calm as Saudi Arabia and OPEC+ initially eased fears of a major supply disruption, allowing for oil prices to recede a little with Brent falling to $64.75.
With heightened geopolitical tensions in the region, risk sentiment remained on the softer side as equities stayed weaker overall alongside a further retreat in bond yields during the European morning. "For now, markets are well supplied with ample commercial stocks", it said in a tweet. The Wall Street Journal reported Sunday that Saudi officials said a third of crude output will be restored by Monday.
Prices eased after Trump announced that he would release US emergency supplies, and producers around the world said there were enough stocks stored up to make up for the shortfall.
The president also "informed all appropriate agencies to expedite approvals of the oil pipelines now in the permitting process in Texas and various other States", without naming specific projects.
"Because we have done so well with Energy over the last few years (thank you, Mr. President!), we are a net Energy Exporter, & now the Number One Energy Producer in the World".
Despite the U.S. accusation, the White House said on Sunday Trump may still meet his Iranian counterpart Hassan Rouhani at the upcoming United Nations assembly.
"The IEA is monitoring the situation in Saudi Arabia closely", the agency said in a statement issued on Saturday following the attacks.
Yemen's Houthi rebels, who have been targeted by a Saudi-led coalition since March 2015 in a vicious war in the Arab world's poorest country, maintain they launched 10 drones that caused the extensive damage.