成人快手

The CBOE has started trading in futures contracts for the cryptocurrency. We speak to Garrick Hileman, a research fellow at the University of Cambridge, about whether this will give Bitcoin more legitimacy. The World Trade Organisation meets in Argentina, and we examine what's on the agenda at the three-day summit. Plus, sales of weapons are on the rise. Does this mean we're living in a less secure world?

(Picture: A visual representation of the digital cryptocurrency, Bitcoin. Credit: Dan Kitwood/Getty Images)