Khashoggi, a former government adviser who went into self-imposed exile in the U.S. previous year to avoid possible arrest, has been critical of some of the policies of Saudi Crown Prince Mohammed bin Salman and Riyadh's intervention in the war in Yemen.
Human rights groups have called on Saudi Arabia to verify Khashoggi's whereabouts after Turkish and Saudi authorities offered conflicting accounts of his disappearance, with Ankara saying there is no evidence he left the diplomatic mission and Riyadh saying that he exited the same day.
Jamal Khashoggi has not been seen since he went to the Saudi embassy on Tuesday to receive an official document for his upcoming marriage.
"We believe that all the armaments we have from the United States of America are paid for, it's not free armament".
"The burden of proof is on Saudi Arabia to produce evidence for its claim that Khashoggi left the consulate alone, and that Saudi agents have not detained him", said Middle East director Sarah Leah Whitson.
Khashoggi was at the consulate to acquire paperwork regarding his divorce from his Saudi wife and to marry a Turkish woman, who was first to break the news about his disappearance.
"We are now above $300 billion, we're getting close to $400 billion".
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Donald Trump defended his pick but conceded that the appeals court judge has had a "bit of difficulty" with alcohol. George Hartmann, a spokesman for Senate Judiciary Committee Chairman Chuck Grassley (R-Iowa), said it best.
Yemeni activist and 2011 victor of the Nobel Peace Prize, Tawakkol Karman said she believed Khashoggi "was kidnapped in this gangster's den that is supposed to be a consulate".
Members of the media report near the entrance to a blocked road leading to the Saudi Arabia consulate in Istanbul, Thursday, Oct. 4, 2018.
Khashoggi is a longtime Saudi journalist, foreign correspondent, editor and columnist whose work has been controversial in the past in the ultraconservative Sunni kingdom.
The State Department said it was aware of Khashoggi's disappearance and was seeking more information. In fact, President Trump chose to visit Saudi Arabia for his maiden global trip as president a year ago.
Once a friend to the royal family, Khashoggi became one of its most vocal critics.
The Saudi journalist had raised questions about the state of human rights and freedom of expression in the Gulf kingdom. He also, on several occasions, interviewed Osama bin Laden.
Bin Salman brushed off US President Donald Trump's humiliating comments about Saudi Arabia perishing within two weeks without American support, claiming that his kingdom existed decades before the US and will need "something like around 2,000 years to maybe face some dangers".