Turkish officials believe Mr Khashoggi was murdered by Saudi agents but the Saudis have denied this. But global pressure has been mounting on the Saudi ruling family amid the conflicting accounts. They also noted apparent Saudi attempts to scrub the scene by bringing in cleaning crews and repainting areas of the consulate.
Tukey's demands are more complex in relation to Saudi Arabia, but the Turkish economy, struggling under the weight of a depleted currency and spiralling inflation, could certainly benefit from Saudi investment.
Foreign Minister Mevlut Cavusoglu had said earlier on Tuesday that Turkish officials would extend their investigation into Khashoggi's disappearance to include the residence of the Saudi consul and some vehicles. He is the latest top Saudi diplomat around the world to return home for consultations.
The secretary of state was all smiles as he across a vast Persian carpet, his hand outstretched as he approached the crown prince.
"We are strong and old allies". "We face our challenges together - the past, the day of, tomorrow".
Pompeo replied with enthusiasm: "Absolutely". When investigators entered the consulate, they "smelled chemicals had been used", according to two officials in contact with the investigators.
Turkish President Recep Tayyip Erdogan on Tuesday said he hopes a reasonable opinion will be reached as soon as possible in the investigation, adding the search in the Saudi consulate in Istanbul will continue with the investigation also looking into toxic materials.
The top USA diplomat will be in Turkey today to meet Foreign Minister Mevlut Cavusoglu.
That would be a sharp reversal of earlier statements in which Saudi officials said they had nothing to do with the journalist's disappearance and said he left the Saudi consulate minutes after he first arrived on 2 October.
"The Saudi government can no longer remain silent, and it is essential that our own government and others push harder for the truth", Ryan said in a statement. The president told AP Tuesday that that description was informed by his "feeling" from his conversation with Salman, and that the King did not use the term.
On Tuesday, Washington Post publisher and CEO Fred Ryan called for a "full and honest explanation" of Khashoggi's disappearance.
CNN said the Saudis may argue the operation was conducted without clearance and those responsible would be held accountable. "It sounded to me like maybe these could have been rogue killers".
The inspection was agreed after Saudi King Salman and Turkish President Erdogan spoke yesterday for the first time since Turkey accused the Saudis of killing and dismembering Khashoggi who criticised the Saudi crown prince.
As he dispatched Pompeo to Riyadh on Monday, Trump told reporters at the White House that King Salman's denials to him about Khashoggi's fate in a phone call "could not have been stronger".
US President Donald Trump on Saturday had called for "severe punishment" of ally and oil spigot Saudi Arabia if Riyadh was shown to be involved.
"For years, they have been known as the super-conservative country where women can't drive, gay people get flogged and thieves have their hands chopped off", Noah said.
"I would expect to see some kind of ..."
While the meetings were going on, Trump, in Washington, said on Twitter, "For the record, I have no financial interests in Saudi Arabia (or Russian Federation, for that matter)".
President Trump has previously said he does not want to halt a proposed $110 billion arms sale to Saudi Arabia - as some in Congress have suggested - because it would harm the U.S. economically. It was not clear why Turkish officials did not provide scans of all 15 passports.