The blockading of the Ukrainian port city of Odessa is having disastrous consequences, not just on Ukraine. Millions of people around the world live in countries that are overwhelmingly reliant on Ukrainian exports. The country, known as the breadbasket of Europe, ships cereals, grain and fertilizer around the world - as does Russia. The disruption of these goods flowing out of the region is impacting places in the African continent which are already struggling due to drought and failed crop harvests. One man can possibly put a stop to this - Vladimir Putin. We speak to two journalists covering Europe and global population and demographics - Maria Tadeo of Bloomberg and Stephanie Hegarty of the BBC. And of course with the smart takes of former Chief of MI6 Sir Richard Dearlove.