As Gulf leaders convene for the 46th GCC summit during a tense time for the region, we discuss what role the US could play in a joint defence plan. Plus: Design Miami, how taxes might have birthed civilisation and the International Luxury Travel Market in Cannes.

Will Donald Trump’s Republican party purges cost him in the midterms?
33:18

Nato under strain as members seek clarity on US plans to withdraw troops
33:30

Vladimir Putin heads to Beijing for talks with his Chinese counterpart
31:57