Khashoggi probe

Washington Post columnist and Saudi government critic Jamal Khashoggi went missing at the Saudi consulate in Istanbul on Oct 2. His disappearance and later confirmed death led to a firestorm of criticism of Saudi Arabia.

Riyadh presented various reasons to distance the country from alleged involvement, finally admitting he died in a "brawl" in the consulate. Officials denied, however, that the Saudi crown prince had ordered the killing.

The case sparked an investigation by Turkey and the US Congress sanctioned several Saudis. Still, little concrete action has been taken by world powers against Saudi Arabia or the crown prince. The country is the world's largest oil exporter and a US ally.