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.How much immigration is enough? Fareed and David Frum both offer their takes. On NATO's 70th anniversary, Secretary General Jens Stoltenberg looks at the future of the alliance in a changing world. And what would be a world run by women by like? Tina Brown joins Fareed to discuss the difference women leaders make. A best-selling author, Michael Lewis, uses a podcast to discuss current cultural and political crises. Guests: David Frum, Jens Stoltenberg, Tina Brown, Michael Lewis.