Vaccine nationalism, where countries prioritize their own citizens before the rest of the world, has been effective for rich nations like the United States and Israel. But leaving behind so much of the global population isn't just a humanitarian issue. It could prolong the pandemic, according to the World Health Organization's Chief Scientist, Dr. Soumya Swaminathan, who argues that what the global vaccination effort most urgently lacks are doses, not dollars. In a wide-ranging interview with Ian Bremmer on GZERO World, she calls for a large increase in the global vaccine supply in order to prevent the rise of more dangerous and vaccine-evading super-variants. She also weighs in on a controversial new WHO report investigating the origins of COVID-19 and suggests we may be seeing alternative vaccine forms, like nasal sprays, sooner than we think.