What is on the table for the meeting in Alaska? What are the red lines? What chance Ukraine would accept what is agreed, especially if its president is not even in the room? Many world cities would like to become the Detroit of electric vehicles; our correspondent visits China’s contenders. And treatments improve for even the worst cases of allergies. Get a world of insights by subscribing 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.