Pakistan has taken over from Qatar as the mediator in the US-Iran peace talks. So how did this happen? What's the relationship between Pakistan's Army Chief Asim Munir and Donald Trump? And how does cryptocurrency fit in? Pakistan expert Dr Farzana Shaikh says  cryptocurrency, critical minerals and counterterrorism are key to Pakistan's relationships with both countries, as is the close relationship between Munir and Trump. 

• Guest: Dr Farzana Shaikh, Associate Fellow with the Asia-Pacific Programme at Chatham House, author of Making Sense Of Pakistan, published by Columbia University Press.
• Producer: Catherine Zengerer