Top (Political) Risks of 2021

In this Friday Sept. 20, 2019 file photo, climate change activists participate in an environmental demonstration as part of a global youth-led day of action in New York.
Ian Bremmer, president of Eurasia Group and GZero Media, host of GZERO World with Ian Bremmer and the author of Us vs. Them: The Failure of Globalism  (Portfolio, 2018), previews the top political risks ahead for 2021.