With Trump now appearing to buy into theories about "rogue killers" being responsible, even while Ankara claims it possesses strong evidence of Riyadh's guilt, it seems certain that anyone expecting a strong USA response to Khashoggi's disappearance would be well advised to lower their expectations now.
United States politicians have backed the call for tough punitive action against the Saudis, while Germany, France and Britain have jointly called for a "credible investigation" into his disappearance.
Google Cloud CEO Diane Greene joined the increasing list of prominent US technology and business executives distancing themselves from the Saudi Arabian government's Future Investment Initiative, an event that has been overshadowed by reports of the government's role in executing a journalist.
"We can confirm. that Jamie will not be attending the Saudi event", a JP Morgan spokesperson said in an email to the BBC on Monday.
The Saudi government, it said, would shield the prince by blaming an intelligence official for the botched operation.
The president has sent Secretary of State Mike Pompeo to Saudi Arabia to investigate the disappearance.
U.S. Senator Marco Rubio and Senator Jeff Flake, members of the Foreign Relations Committee, said Congress was prepared to move quickly and firmly if Trump failed to adequately respond to the October 2 disappearance of Khashoggi.
Mr Pompeo's visit comes as Turkish police investigators entered the Istanbul consulate late on Monday.
Saudi Arabia is one of the world's top oil exporters.
Ghanaian coach joins Henry Thierry at French giants AS Monaco
However, his resources could have been even more enviable had Monaco not sold so many of their top players in recent years. "In the first place, I thank AS Monaco for giving me the opportunity to coach the team of this club so special to me".
Significantly, it was expected to showcase the reform agenda of Saudi Crown Prince Mohammed bin Salman.
Turkey's investigation into the disappearance of Khashoggi has reportedly revealed recordings made on his Apple Watch, which synced with his iPhone being carried outside the consulate by Khashoggi's fiancée.
In a statement by the Saudi Press Agency, the government denied any involvement: "The Kingdom affirms its total rejection of any threats and attempts to undermine it, whether by waving economic sanctions, using political pressure, or repeating false accusations".
The Wall Street Journal, citing people familiar with the matter, also said the kingdom is weighing whether to say that rogue operatives killed Khashoggi by mistake during an interrogation. "I've heard that report but nobody's knows if it's an official report".
"The strong moral and legal responsibility which our father instilled in us obliges us to call for the establishment of an independent and impartial global commission to inquire into the circumstances of his death", the family said.
How was the consulate search conducted?
The crown prince, also known as MBS, has aggressively pitched the kingdom as a destination for foreign investment.
In a joint statement, the nations called for a "complete and detailed response" from Saudi Arabia.
The furor over Khashoggi has dealt a serious setback to Prince Mohammed's aggressive pitch for the kingdom as a destination for foreign investment.
Already, worldwide business leaders are pulling out of the kingdom's upcoming investment forum, a high-profile event known as "Davos in the Desert".