Global solutions require help for two-thirds of the world Like curbing global warming, containing the global pandemic requires tackling the vast inequalities between rich and poor countries that have been exacerbated by COVID-19. Share What is remarkable about the increase in nationalist sentiment across the developed world in recent years is that it is occurring at a time when many of today’s most pressing challenges, including climate change and the COVID-19 pandemic, are fundamentally global problems demanding global solutions. And the anger brewing among citizens of vaccine-poor countries – basically, the two-thirds of humanity living outside the advanced economies and China – could come back to haunt the rich world all too soon.