BusinessDW Business AsiaTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoBusiness10/23/2019October 23, 2019First ever Russia-Africa summit underway in Sochi - Pollution crises plague Hanoi - Indian truffles named World's Most Expensive Chocolatehttps://p.dw.com/p/3RmrKAdvertisement