In a raft of decrees, King Salman fires his civil service minister and makes his son US ambassador.
An Italian prosecutor tells a newspaper there is evidence of direct contact between the two.
Files relating to the conviction of the Lockerbie bomber will be handed to the case review commission.
The couple who want to rebuild their shattered city
Why the US is tilting towards Saudi Arabia
Two clerics - and a fashion-loving pilot - fight to lead Iran
The US approach to Iran may require a plan B
Inside the "gut-busting" battle
Can Donald Trump's Arab honeymoon last?
Broadcast time 11:06 BST - 11:30 BST
Broadcast time 13:06 BST - 14:00 BST
Broadcast time 19:06 BST - 20:00 BST
Broadcast time 21:06 BST - 22:00 BST
Will and Kate on their new mental health campaign