20:06HARDtalkUS Ambassador to the UK - Matthew BarzunBBC World Service Duration: 23 minutes Sat 31st Oct 2015, 20:06 on BBC World Service East and Southern AfricaAvailable for over a yearListen nowIn-depth, hard-hitting interviews with newsworthy personalities. Show more GenresNewsFormatsMagazines & ReviewsBrandHARDtalk Source: BBC Online