Countries that once followed the gospel of free trade and liberalism are changing tack and focusing on national interests before anything else, with Donald Trump’s America being a case in point. Our business editor Charles Pellegrin takes a deep dive into how geopolitics is reshaping the global economy with David Baverez. He's a French investor based in Hong Kong and author of the book "Bienvenue en économie de guerre" or "Welcome to the wartime economy", published in French by Novice.