More than a dozen COVID-19 vaccines have been fully approved or are currently in early use globally, and COVAX, the global initiative started last year by the World Health Organization and other partners, is pushing for equitable access to vaccines for all. But most of the half billion jabs given so far have gone to citizens of wealthy countries, with half going to the US and China alone. What's the problem with so-called vaccine nationalism? Ian Bremmer explains that besides the clear humanitarian concerns, the continued global spread of COVID increases the risk of new mutations and variants that can threaten the entire world, vaccinated or not.

Watch the episode: Vaccine nationalism could prolong the pandemic