Saudi Arabia vows retaliation against USA sanction 'threats' following Jamal Khashoggi's disappearance

His fiance, who accompanied him, waited outside the building until its closure.

Mr Khashoggi has written extensively for the Post about Saudi Arabia, criticizing its war in Yemen, its recent diplomatic spat with Canada and its arrest of women's rights activists after the lifting of a ban on women driving. This incident, which involves the Saudi kingdom, Turkey and the United States has sparked an worldwide uproar.

Where is Jamal Khashoggi?... Last week, Saudi Arabia allowed Turkey to search its consulate in Istanbul.

While details behind his disappearance are hazy, there has been a widescale speculation that the journalist might have been killed inside the consulate.

The case of Jamal Khashoggi has gripped the world's attention over the past few days since his disappearance on October 2. Turkish media has also released footage of the men arriving in private jets and checking into hotels near the consulate.

One of them is a forensic expert who has worked at the Saudi Interior Ministry for 20 years, according to a LinkedIn profile.

What is the United States of America saying?

Cengiz added that she had seen reports President Trump wanted to invite her to the White House.

US President Donald Trump over the weekend pledged "severe punishment" if the US concludes that Saudi agents killed Khashoggi, and said there would be "very powerful" repercussions. Moreover, the incident has given rise to a myriad of reactions among US Senators, ranging from boycotting an upcoming economic summit to ending support for Saudi military operations.

Britain, France and Germany released a rare joint statement saying they were treating Khashoggi's disappearance "with the utmost seriousness" and calling for a "credible investigation". Turkey's government claims he was murdered by Saudi authorities and then dismembered.

Saudi Arabia appears to be increasingly cornered.

Investment in sport has proved a viable option for those two oil-rich gulf states looking to project soft power and improve the global prestige of their nations overseas and, it's claimed, Saudi Arabia are set to look to do the same.

Saudi representatives were due to take part in the investigation alongside their Turkish colleagues.

Last week the regional rivals agreed to set up a joint working group to solve the mystery over the disappearance.

According to the Saudi press agency, King Salman thanked Erdogan for welcoming the Saudi government's proposal to form a joint working group to probe the disappearance of Saudi journalist Jamal Khashoggi, and stressed no one could undermine their relationship. Local media reported that the Turkish police forces have been looking into the two private aircrafts that flew in the 15 persons of interest on October 2.

  • Wendy Palmer