President Trump raised the possibility today that "rogue killers" were behind the Saudi journalist's disappearance, not the kingdom's leaders.
"Together we must prove we will not be bullied or else, mark my words, once they have finished kicking the kingdom, we will be next in line", al-Habtoor said.
Trump's comments came after a 20-minute phone call with Salman in which Trump said the king adamantly denied any knowledge of what happened to Khashoggi.
"I sounded to me like maybe there could have been rogue killers".
The search represents new co-operation between Turkey, which says it fears Khashoggi was killed and dismembered there, and Saudi Arabia, which maintains the allegations it faces are "baseless" despite being unable to explain what happened to Khashoggi. This created a major diplomatic crisis for the kingdom, with mounting evidence that the Saudis were involved fueling a growing outcry from foreign governments, USA lawmakers and the Trump administration.
Bernie Sanders (I-Vt.) announced on Monday that he plans to reintroduce his resolution to bring an immediate halt to USA complicity in Saudi Arabia's massacre of Yemeni civilians, with the goal of forcing senators who have expressed fury at Khashoggi's murder to finally act on their indignant words.
But the president has also said "we would be punishing ourselves" by canceling arms sales to Saudi Arabia.
Since the controversy over Saudi Arabia's involvement in the disappearance of Khashoggi, who hasn't been seen since he entered the Saudi consulate in Turkey on October 2, a number of top executives, companies and news outlets have dropped out of the summit, an event meant to highlight investment in the country.
In contrast, last year's Future Investment Initiative was attended by former French President Nicolas Sarkozy, former U.K. Prime Minister Tony Blair, Treasury Secretary Steven Mnuchin and International Monetary Fund Managing Director Christine Lagarde. The dissident Saudi journalist's Turkish colleagues and several Turkish officials have voiced concerns that he was murdered in the consulate.
On Monday, King Salman ordered an investigation into the case.
"The kingdom affirms its total rejection of any threats and attempts to undermine it, whether through economic sanctions, political pressure or repeating false accusations", a statement by the Saudi government said. Saudi Arabia has denied the claims.