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.As Boris Johnson becomes British Prime Minister and promises to leave the EU - even if it means crashing out - in less than 100 days, what would it mean for the UK, Europe & the world? Then, Trump says he could wipe Afghanistan off the face of the earth. The Afghan government called the remark "unacceptable". Fareed talks to Afghanistan's Ambassador to the U.S. Also, how did we get from the Opium Wars of the 1800's to Hong Kong shaken by protests today? Fareed will explain. Guests: Zanny Minton Beddoes, Niall Ferguson, Richard Haass, Ambassador Roya Rahmani, and Dr. Eric Topol.