Will the promise of the Covid-19 vaccines help us return to normal in 2021?

2020 ended with some relief that we now have vaccines for Covid-19. But the pandemic is not over yet and new strains of coronavirus have spread. Now we have to work out how to distribute the vaccines globally. And anyway, just how effective are they? Which is the best? How long will it take for them to reach us?  On this week's Beyond the Headlines, Suhail Akram looks at the next front in the battle against Covid-19.