"Nothing can justify this killing and we condemn it in the strongest possible terms", Germany, Britain and France said in their joint statement yesterday. If the supply gap created by disruption in Libya, Nigeria, Venezuela - as well as US sanctions against Iran - were to grow as large as 3 million barrels a day, Saudi Arabia would need to tap its oil reserves, he said.
Despite Riyadh's admission that its operatives were at fault for Khashoggi's death, and statements of remorse from members of its leadership, worldwide outcry over the apparent murder is growing.
German Chancellor Angela Merkel announced the suspension of weapons sales to Saudi Arabia on the grounds that they can not be done under the "current circumstances", in reference to the Khashoggi case. Saudi Arabia has threatened to retaliate against any punitive action, but analysts say that wielding its main weapon - oil production - could backfire, putting the prince's economic goals even further out of reach.
"There remains an urgent need for clarification of exactly what happened ... beyond the hypotheses that have been raised so far in the Saudi investigation, which need to be backed by facts to be considered credible".
"They made the mistake when they killed Jamal Khashoggi in the consulate and they tried to cover up for it", he said.
"If the supply is too long, we should be able to cut", Al-Falih said.
Saudi Arabia has sought to check the fallout by arresting 18 people suspected of killing Khashoggi, dismissing two top officials and claiming the journalist and government critic died accidentally after being put in a chokehold.
Saudi Arabia deployed Twitter army against critics including Jamal Khashoggi, says report
Khashoggi's death was the fault of a "rogue operation" and a "tremendous mistake", and vowed the perpetrators would be punished . The official said all 15 team members had been detained and placed under investigation, along with three other local suspects.
Mr Khashoggi went missing after entering the consulate to obtain documents for his upcoming marriage.
In the days after Khashoggi vanished, Saudi officials initially said that he had left the consulate, implying premeditation on the part of the Saudi team.
The death of dissident journalist Jamal Khashoggi must now galvanise greater scrutiny of Saudi Arabia's military intervention in Yemen, where a coalition led by the kingdom is fighting Shia rebels, said Yemeni Nobel laureate and human rights advocate Tawakkol Karman. "Yeah. I think he did it".
Other senior German politicians, including foreign minister Heiko Maas and foreign affairs committee chairman Norbert Röttgen, have also called for a halt in arms sales to Saudi Arabia, citing dissatisfaction with Riyadh's explanation of how Khashoggi died inside the Saudi consulate in Istanbul.
The EU said the continuing investigation should bring "proper clarity on the circumstances of the killing and ensuring full accountability of all those responsible for it".
In a series of clips from closed-circuit television cameras both outside the consulate, in Istanbul's Levent district, and in the tourist-heavy Sultan Ahmet area, one of the Saudi suspects is seen wearing the gray trousers and black jacket worn by Khashoggi when he entered the mission.
Speaking late Saturday after a campaign rally in Nevada, Trump said he will be working with Congress on the U.S.' official response. That explanation has sparked allegations of a cover-up meant to shield the powerful crown prince.
"You don't need a body double for a rendition or an interrogation", the official said. "And I think we're inching our way there".