On his first foreign trip as US president, Donald Trump has signed $350bn worth of trade agreements with Saudi Arabia, including a $110bn arms deal to to boost the Saudi military.



Also, the newly re-elected Iranian president, Hassan Rouhani, has pledged to open the country to the world and give greater freedoms to Iranians. And one of Britain's foremost brain surgeons explains what it takes to succeed in the operating theatre.



(Photo: Donald Trump boards his presidential jet. Credit: AFP)