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Is the telecoms equipment provider a front for Chinese espionage or just the victim of the escalating US-China dispute? Why don't Western governments trust the company to handle its citizens' data?Following the controversial arrest in Canada of Huawei's finance head Meng Wanzhou, the BBC's Vishala Sri-Pathma asks whether the move is just the latest step in a tech cold war between the US and China. She speaks to Rand Corporation defence analyst Timothy Heath, tech journalist Charles Arthur, and China tech podcaster Elliott Zaagman.(Picture: Security guard keeps watch at the entrance to the Huawei global headquarters in Shenzhen, China; Credit: Nicolas Asfouri/AFP/Getty Images)

Presidential elections in the DRC this weekend come after 17 years of conflict-ridden rule under controversial president Joseph Kabila. Leading businessman and mine-owner Emmanuel Weyi explains why he has pulled out of the presidential race. But the country's mineral wealth also means the elections are being closely watched by international industries. Indigo Ellis from the risk consultancy Verisk Maplecroft gives her assessment, and Jack Lifton, a business operations consultant in metals and an expert on cobalt, explains why one mineral produced in the DRC is so important to the emerging electric car industry.(Photo: Women walk past a campaign poster of the President of the Democratic Republic of the Congo, Joseph Kabila's chosen successor Emmanual Ramazani Shadary in Kinshasa, Credit: Getty Images)

How technology can help look after an ageing population. Ed Butler visits a care home in Japan where robots are used to help dementia patients, and hears from Adam Gazzaley, a California-based professor of neurology and psychiatry who has developed a video game aimed at keeping older people alert. Computer science academic Alessandro di Nuevo gives an overview of how technology is increasingly employed in elderly care.(Photo: 'Paro', the therapeutic seal robot with an elderly woman in Japan, Credit: BBC)