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.This week Fareed sits down with America's most senior military officer, Joint Chiefs Chairman Gen. Mark Milley who retires at the end of the month. They discuss the latest on Ukraine's counteroffensive, avoiding a great power war with China, and the importance of an apolitical American military. Fareed also speaks with the great biographer Walter Isaacson on his latest book, "Elon Musk." Isaacson shares what he learned about how the controversial tech mogul became who he is today, as well as the role Musk plays in politics, tech and more.