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.U.S. Government shutdown; Trump's vision of immigration and American values; did pollsters learn from their 2016 mistakes; can the U.S. protect itself from a nuclear attack. Guests are Timothy Naftali, Niall Ferguson, David Frum, Margaret Hoover, Nate Cohn, Harry Enten, and Alex Wellerstein.