A couple of months before India was to host the Group of 20 summit in 2023, Delhi, the venue, was in the middle of a metamorphosis. Amid a blitz of refurbishing and beautification, another kind of preparation that had started months earlier was underway—negotiations and back-channel diplomacy that anchored the summit but remained out of public view. This is the gap that Amitabh Kant tries to fill in How India Scaled Mt G20: The Inside Story of the G20 Presidency by granting readers access to the green room of the summit.