The Jamal Khashoggi saga continues

On Oct 2, journalist and Saudi critic Jamal Khashoggi walked into Saudi Arabia's consulate in Turkey to get some documents for his upcoming marriage. His wife-to-be waited outside in the car.

He never returned and Turkey has hinted he was wearing an Apple Watch that recorded his murder in the consulate.

So far the US has stayed out of the controversy, with Mnuchin promising to attended Saudi Arabia's Davos in the desert summit later this month.

That may have changed on the weekend after Trump said the US could take "very, very powerful, very strong, strong measures" against the kingdom if leaders are found responsible for the killing of the Washington Post columnist.

That helped to send the Saudi Tadawul All Share Index lower by as much as 7% before it recovered to close down 3.5%.

In response to the US comment, Saudi Arabia said it would retaliate against any punitive measures.