America’s international intelligence-sharing relationships have been decades in the making and rely not on a treaty but trust. Could Donald Trump damage the powerful spy alliance? Why we may soon be buying cutting-edge medicines developed in China (11:00). And introducing a new regular feature, “What to watch this weekend” (17:39). Listen to what matters most, from global politics and business to science and technology—Subscribe to Economist Podcasts+For more information about how to access Economist Podcasts+, please visit our FAQs page or watch our video explaining how to link your account.