Part two of Tyler Brûlé’s interview with Canadian prime minister Mark Carney. Plus: we delve into the appointment of the late Ayatollah Khamenei’s son and consider what it will mean for Iran’s ongoing war with Israel and the US.

A war of numbers: can the Gulf keep up?
31:14

The US Senate votes against limiting Trump’s war powers
38:29

Who will take over from Ayatollah Khamenei? Plus: business news and Paris Fashion Week
20:51