While Riyadh officials have admitted the murder was planned, they have so far declined to release details of the whereabouts of the 59-year-old journalist's missing body.
Khashoggi, a critic of Saudi rulers, was killed inside the country's Istanbul consulate on 2 October after visiting to obtain documents he needed to get married.
"The Saudi government's long-standing repression of critics, exemplified by the extrajudicial execution of journalist Jamal Khashoggi last month, has until recently been willfully ignored by United Nations member states".
Turkish police units were given permission by Saudi authorities to search the consulate on October 15 and 16, and searched the residence of Consul General Mohammad al-Otaibi on October 17.
Although Riyadh has arrested 18 individuals on suspicion of involvement, the key question remains over who gave the order to kill Khashoggi.
The killing is likely to come up among representatives of more than 100 countries set to speak during the review of Saudi Arabia on Monday.
Turkish and Saudi officials have carried out joint inspections of the consulate and consul's residence in Istanbul, but President Tayyip Erdogan says some Saudi officials are still trying to cover up the crime.
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Rouhani said even without the waivers Iran would still be able to sell its oil, semi-official Tasnim news agency reported. Pompeo wouldn't say if India and China are receiving waivers, or if they'd delivered commitments to stop their buying.
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But the Wall Street Journal reported that he was held for 11 months for criticising last year's mass detention of more than 200 princes, ministers and businessmen over allegations of corruption. The Gates Foundation had pledged $5 million to Misk, which runs an initiative called the Grand Challenges Program giving grants to health and development-related applicants.
"Jamal Khashoggi's abduction and murder are extremely troubling", said the Gates Foundation in a statement. "We are observing current events with concern, and we do not plan to fund any subsequent rounds of the Misk Grand Challenges program".
The comments on Monday by the senior official echo a report in Turkey's daily Sabah newspaper that Saudi Arabia allegedly sent chemist Ahmed Abdulaziz Aljanobi and toxicology expert Khaled Yahya al-Zahran as part of a delegation tasked with erasing evidence in the consulate.
Saudi Arabia is the major investor in Softbank's $93bn (£71bn) Vision Fund.
Al Jazeera's Paul Brennan reporting from Geneva said that the questioning that Saudi Arabia faces is stern, particularly because of the context of the recent murder Khashoggi.
Son said SoftBank was "deeply saddened" by the news of Khashoggi's murder, which he condemned as "a horrific and deeply regrettable act". "They think that we have answers, and unfortunately we don't".
The fact that a clean-up team was deployed suggests that Mr Khashoggi's killing "was within the knowledge of top Saudi officials", the Turkish official said.
"I think it's a bad situation", Trump said during the interview, as published by Axios.