Panellists Rebecca Tinsley and Charles Hecker discuss the UN’s warnings about nuclear threats, the unintended consequences of the US’s slide towards isolationism, Niger’s rejection of Western interventionism and the V&A’s decision to label former UK prime minister Margaret Thatcher a “contemporary villain”. Plus: Andrew Mueller recounts the opening of the Sydney Harbour Bridge on this day in 1932.  See omnystudio.com/listener for privacy information.