Saudi Arabia rolls out the red carpet for Vladimir Putin, signalling a seismic shift in relations.Read more
BBC security correspondent
Saudi Arabia’s Crown Prince Mohammed bin Salman is transforming and modernising a deeply conservative country.
Yet at the same time, he is accused of human rights abuses, and suspected of being behind the murder of Jamal Khashoggi.
So just who is the man they call MBS?
The crown prince warns oil prices could become "unimaginably high" if the world doesn't act to deter Iran.
Crown Prince of Saudi Arabia Mohammed bin Salman denies ordering the killing of the Saudi journalist.
Saudi Arabia's crown prince has warned that oil prices could rise to "unimaginably high numbers" if the world does not act to deter Iran.
Mohammed bin Salman said a war between Saudi Arabia and Iran would ruin the global economy, following an attack on its oil facilities two weeks ago which it blames on Tehran.
Speaking to CBS News, he also said he accepted some responsibility for the killing of journalist Jamal Khashoggi.
But he denied personally ordering it.
Brent crude - the international benchmark - is trading marginally ahead at $61.93 a barrel while West Texas Intermediate is up 0.20% at $56.02.