Unspun World: Are Russian forces on the brink of seizing Pokrovsk?

John Simpson, in discussion with the BBC’s unparalleled range of experts across the world, analyses why Russia is so keen to capture the Ukrainian city of Pokrovsk, explores how difficult it will be to rebuild Gaza, and looks at how quantum computing could change the way we solve some of the world’s biggest challenges. Producer: Kate Cornell Executive producer: Benedick Watt Commissioning editor: Vara Szajkowski