How a “President Biden” could reshape US foreign policy

If the 2016 presidential election taught us anything, it's that only fools make predictions. So let's give it a go! In this episode of GZERO World, Ian Bremmer poses a basic question: If Joe Biden wins the presidency how would he reshape U.S. foreign policy? Anne-Marie Slaughter, who served as a top State Department official under President Obama and now runs the think tank New America, weighs in.