According to U.S. intelligence intercepts reported on by the Washington Post on Wednesday, before the journalist's disappearance, Saudi officials had discussed a plan to lure Khashoggi back to Saudi Arabia and detain him.
"I would not be in favor of stopping a country from spending $110 billion - which is an all-time record - and letting Russian Federation have that money and letting China have that money", Trump told reporters, referring to an arms deal he signed with Saudi Crown Prince Mohammed bin Salman during his maiden trip to Saudi Arabia previous year.
Turkish police were looking into two private aircraft that landed at Istanbul's Ataturk airport on October 2 at different times carrying the individuals of interest in the case.
Broadcast by Turkey's TRT World channel and apparently obtained from security cameras, the footage shows vehicles driving up to the consulate, including black vans thought to be central to inquiries.
But three US law enforcement sources said that because Khashoggi is not an American citizen and disappeared outside the country, the Federal Bureau of Investigation has no automatic jurisdiction to get involved in the case and could only become involved if requested by a foreign government such as Turkey. Bob Corker, Republican chairman of the Senate Foreign Relations Committee.
The Washington Post, where Khashoggi had been a regular contributor over the past year, also demanded answers.
Trump, questioned by reporters at the White House, said, "If it turns out to be as bad as it might be, there are certainly other ways of handling this situation" besides canceling arms sales.
One of them was the New York Times columnist and Pulitzer Prize winning author Thomas L. Friedman.
Mr Trump is a key ally of the oil-rich Gulf state and has expressed reservations over withholding American arm sales over the claims, but said the U.S. was working hard with Saudi Arabia and Turkey to get answers.
President Donald Trump said Thursday the us has investigators in Turkey trying to determine what happened to Saudi journalist Jamal Khashoggi, last seen entering Riyadh's consulate in Istanbul last week, but acknowledged his life is imperiled.
Khashoggi, a former Saudi government adviser, had been living in the United States since past year fearing arrest.
Karen Elliott House, a veteran writer on Saudi affairs and chairwoman of the board of trustees at RAND Corp., said US support for the Yemen war is likely to be the focus of congressional criticism but won't endanger a relationship that has endured for decades, underpinned by shared strategic interests. "We want to bring her to the White House", Trump told reporters.
Trump decries calls to impeach Kavanaugh as an ‘insult to American public’
And all Curtis Johnson seemed to hold was that that was excluded. "We wish you a long and happy career in our common calling". He joked with the crowd that upon nominating him, he told Kavanaugh that he expected a quick and easy confirmation process.
Saudi Arabia has described the allegation as unfounded, but has offered no proof that Khashoggi left the consulate alive, nor has Turkey produced evidence that he was killed inside the diplomatic outpost. And I love the King, King Salman.
On Thursday afternoon, the US State Department said the Saudi ambassador to the US is headed back to Riyadh and the US government expects him to return to Washington with information on Khashoggi's disappearance.
Despite this Riyadh's responses remained weak against Trump's insults.
Under U.S. law, major foreign sales of military equipment can be blocked by Congress.
"Several of Khashoggi's friends said that over the past four months, senior Saudi officials close to the crown prince had called Khashoggi to offer him protection, and even a high-level job working for the government if he returned to his home country", the Post reported. The reports did not cite a source and there was no official confirmation of the claim.
Did the US know about the assassination?
WASHINGTON ― The American president who has made a habit of calling news media "the enemy of the people" is now facing a possible effect of his words: the disappearance, perhaps murder, of a Washington-based journalist at the hands of one of the president's closest allies.
Nevertheless, the Post's report raises questions about what duty US intelligence agencies may have had to warn Khashoggi that he was in danger, if they did know of a plot to capture him.
Trump, meanwhile, said that while he wants to get to the bottom of what happened to Khashoggi, he does not want that effort to interfere with planned arms sales to Saudi Arabia.
Last week, the crown prince told Bloomberg News that his government was "very keen to know what happened to him", and that Mr Khashoggi had left "after a few minutes or one hour".
He said the case has created a dilemma for the Turkish government. Two others flew out commercially, Sabah said.