Roger Waters engaged in a heated argument on TV, challenging a reporter’s position on world politics and war – but adding it had been a “pleasure” to debate with him. CNN’s Michael Smerconish appeared to have set out to push Waters into controversial territory, although the musician is well-known for happily going there anyway. The interview – which can be seen below – began with a question about the introduction to Waters’ This is Not a Drill shows, where he tells the audience: “If you’re one of those ‘I love Pink Floyd but I can’t stand Roger’s politics’ people, you...