Russell Clark of Horseman Capital warns that a Chinese currency shock could be the spark that burns down the entire global economy. In this conversation with Real Vision’s Roger Hirst, Clark forecasts that Chinese policymakers will eventually respond to the trade war by declaring: "if you're changing the trade rules, we're going to change the currency rules." He then walks through the massive consequences that he believes this action could have. Filmed on July 11, 2019 in London.