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The rise and fall of Indian jeweller Nirav Modi, arrested in London and accused by Indian authorities of a massive fraud. Ed Butler speaks to Mick Brown, a journalist at the UK's Daily Telegraph who has covered the story, and James Crabtree, author of the book The Billionaire Raj.(Photo: Nirav Modi at his office in Mumbai in 2016, Credit: Getty Images)

Voice assistant apps like Alexa, Siri and Google Assistant are about to transform the economics of the web.Nearly a quarter of all households in the US and in China already have a smart speaker in their homes, allowing them to play music, order a delivery or find out the news, all by simply talking to their computer. Meanwhile an estimated 2.5bn smartphones now carry these wannabe AI oracles.Manuela Saragosa asks Silicon Valley analyst Carolina Milanesi whether this new technology could one day rival the conversational prowess of the ship's computer on Star Trek. And what kind of vision do the likes of Google, Apple and Amazon have for it? Meanwhile journalist and author James Vlahos explains why he thinks their advent is bad news for anyone who wants to maintain any visibility on the internet. And we put his criticisms to one of the major players - Andrew Shuman from the team behind Microsoft's Cortana voice assistant.Producer: Laurence Knight(Picture: Amazon Echo Sub subwoofer; Credit: Philip Barker/Future Publishing via Getty Images)

Rome's decision to sign up to China's One Belt One Road initiative has proved controversial both at home and among Italy's closest allies.Washington DC and Brussels are both sceptical of the true intent behind Beijing's programme for financing major overseas infrastructure projects, ostensibly to enhance China's trade routes. President Xi Jinping's recent invitation to Rome to sign a memorandum of understanding with the Italian government - an initiative spearheaded by the little known Italian economy minister Michele Geraci - has caused consternation.Manuela Saragosa gets the view in Washington DC from Jonathan Hillman of think tank the Centre for Strategic and International Studies. And the former Italian foreign affairs minister Giulio Terzi Sant'Agata explains why many of his compatriots are worried about the contents of the that memorandum.(Picture: Italys Prime Minister Giuseppe Conte greets China's President Xi Jinping at Villa Madama in Rome; Credit: Alberto Pizzoli/AFP/Getty Images)