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.Iran's Foreign Minister, Mohammad Javad Zarif, on high tensions in the Persian Gulf. Does Donald Trump want war? And, can the world agree on rules of the road for cyber warfare? Former U.S. counterterrorism chief Richard Clarke on why nations need to come together...now. Then, in an exclusive interview, Fareed speaks with Greece's newly-elected Prime Minister, Kyriakos Mitsotakis, about how he beat his nation's populist incumbents. What lessons might that victory have for America's Presidential contenders? Guests: Mohammad Javad Zarif, Richard Clarke, and Kyriakos Mitsotakis.