Saudi Arabia: Three campaigns MBS cannot win

These are uncomfortable days for Saudi Arabia's leadership and in particular for its all-powerful Crown Prince Mohammed bin Salman, known as MBS.

At home he remains popular, but internationally he has been unable to shake off the veil of suspicion for his alleged role in the 2018 murder of Saudi journalist Jamal Khashoggi.

And now a new US administration is preparing to move into the White House and President-elect Joe Biden has made it clear he will be taking a much tougher stance than his predecessor on certain Saudi positions.

So what are the issues at stake and why do they matter to those in power in Washington and Riyadh?