Covid vaccine: challenges of distributing it around the world

After highs of a vaccine success story - the difficult questions remain about how the big pharmaceutical firms go about getting it to people around the world. We head to Ethiopia - once held up as the poster child of of coming economic success on the African continent - now seemingly spiralling towards civil war and a possible conflict with neighbouring Eritrea. And we'll tell you all about the world's biggest free trade agreement - and what it might mean more generally for global trade.