The White House is brushing aside threats by Saudi Arabia that it may economically retaliate for any USA punitive action imposed over the suspected killing of journalist Jamal Khashoggi, pledging a "swift, open, transparent investigation" into his disappearance.
The kingdom agreed in principle on Friday to launch a joint investigation into Khashoggi's disappearance in conjunction with Turkish police, but a search of the consulate has been delayed by disagreements over the terms.
Turkish officials have said they fear a Saudi assassination team that flew into and out of Turkey on October 2 killed and dismembered Khashoggi.
The Saudis are preparing a report that will acknowledge that Saudi journalist Jamal Khashoggi's death was the result of an interrogation that went wrong, one that was meant to lead to his abduction from Turkey, according to two sources.
The political fallout of the disappearance and possible death of Saudi writer Jamal Khashoggi has continued to reverberate around world, casting a cloud on a major investment conference aimed at promoting Saudi Crown Prince Mohammed bin Salman's plans for the kingdom. The reports say Khashoggi turned on the sound recording capability on his device as he entered the Saudi consulate, and that the watch was connected to the iCloud and cell phone he left with his fiancee, Hatice Cengiz, before he went inside.
Saudi Arabia has denied the allegations.
White House reporter for CBS Kathryn Watson said Trump has told reporters Pompeo will leave "within an hour".
"So far the oil market is withstanding the verbal war and though prices are slightly higher. they are a good $5 below the peak last week", said Fiona Cincotta, analyst at City Index.
Trump tweets, "Just spoke to the King of Saudi Arabia who denies any knowledge of whatever may have happened 'to our Saudi Arabian citizen'". Germany, Britain and France issued a joint statement over the weekend expressing "grave concern" and calling for a credible investigation to ensure those responsible for the disappearance "are held to account".
Ford Motor Co Chairman Bill Ford also pulled out, as well as media organizations like CNN and Bloomberg which once served as sponsors of the conference.
Trump also seemed to offer another theory for a crime allegedly carried out at the Saudi diplomatic post.
"This, I think, depends on the crown prince. So I'd be careful to wait until we see what the facts are".
Instead, the disappearance of Saudi journalist Jamal Khashoggi has led to an exodus of global A-listers from what is called "Davos in the Desert", potentially undermining the event.