In an interview to be aired Sunday, Trump told CBS' "60 Minutes" that the consequences of Saudi Arabia being proven agents in the disappearance of the Washington Post journalist would be "severe". That prompted a pugnacious Saudi response on Sunday: "The kingdom also affirms that if it is [targeted by] any action, it will respond with greater action".
Saudi Arabia has been under pressure since Khashoggi, a prominent critic of Saudi Crown Prince Mohammed bin Salman, and a U.S. resident, disappeared on October 2 after visiting the Saudi consulate in Istanbul.
According to her account, Khashoggi was not overly fearful before he entered Saudi consulate on October 2, although he did tell her to alert Turkish authorities if he did not return soon.
Jamal Khashoggi, a well-known journalist and critic of the Saudi government, has not been seen since he attended Saudi Arabia's consulate in Istanbul last week.
This statement came after the Saudi stock market plunged by almost 7 percent at one point on Sunday. "That I can tell you with 100% certainty, with nearly full unanimity across the board, Republicans and Democrats, there will be a very strong congressional response if in fact the Saudis lured [Khashoggi] into that consulate, murdered him, cut up his body and disposed of it, there will be a very strong congressional response".
Turkey believes the journalist was deliberately killed in the consulate and his body removed, but Saudi rejects those claims.
He, however, said that he is against cancelling the $110 billion arms deal with Saudi Arabia because of this.
Court convicts American pastor, allows him to leave Turkey
Lindsey Graham, R-S.C., Thom Tillis, R-N.C., and Jeanne Shaheen, D-N.H., and others for their intervention. Brunson's lawyer took the case to Turkey's highest court last week seeking his release from house arrest .
The conference is part of Saudi Arabia's Vision 2030 project - the brainchild of the kingdom's de facto ruler, Crown Prince Mohammed bin Salman.
Saudi Arabia dismissed allegations that it ordered his killing as "lies".
"It's a shame because I really wanted to go there, we all did", Butler said.
Mr Khashoggi has not been seen or heard from since he entered the Saudi consulate in Istanbul on 2 October. In addition, countries such as Russian Federation and China are ready to supply them with the necessary arms, if U.S. backs off. But Mr Khashoggi's disappearance has led several business leaders and media outlets to back out of the upcoming investment conference in Riyadh called the Future Investment Initiative.
Turkish authorities recovered the audio from Khashoggi's iPhone and his iCloud account, the newspaper said. Trump promised to personally call Saudi Arabia's King Salman soon about 'the bad situation in Turkey'. However, a column published in English a short time later by the general manager of the Saudi-owned Al-Arabiya satellite news network suggested Saudi Arabia could use its oil production as a weapon.