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.President Trump's Syria decision-will it result in the resurgence of ISIS? Former Secretary of Defense Ash Carter joins Fareed to discuss. Then, the Trump administration is in the spotlight for its quid pro quo approach to foreign policy - Fareed talks to two former top national security officials, Stephen Hadley and Meghan O'Sullivan, to get their takes. And, across the pond, Zanny Minton Beddoes discusses Parliament punting once again on Brexit. Guests: Ash Carter, Stephen Hadley, Meghan O'Sullivan, and Zanny Minton Beddoes.