Journalist and author Fareed Zakaria hosts this in-depth look at the major global developments of the week (the title's "GPS" stands for "Global Public Square"), with an emphasis on new ideas and innovative solutions to the World's toughest problems. Each episode also features Zakaria leading a panel discussion and interviewing a major world figure. After Russia's Vladimir Putin annexed parts of Ukraine and threatened the use of nuclear weapons, Fareed sits down with Defense Secretary Lloyd Austin to discuss how the U.S. sees the threat and how it is responding. Looking east, Secretary Austin discusses China's threat to Taiwan and whether the U.S. military would come to the self-governing island's defense. Then, Mikhail Khodorkovsky, former Russian oil tycoon who knew Putin before the two fell out, helps us understand Putin's mindset, his nuclear threat, and what Russia would look like post-Putin.