Most national AI strategies and major ethical guidelines make only cursory mention of children and their specific needs. For country policies, references to children are usually about preparing them as a future AI workforce. But as children increasingly use or are affected by AI systems in everyday situations -- from playing with robotic toys that listen, observe and talk, to interacting with voice assistants -- the lack of attention on the opportunities and risks that AI systems hold for children is growing. To help fill this gap, the Office of Global Insight and Policy is leading a two-year project to explore approaches to protecting and upholding child rights in an evolving AI world. We are supported by and partnering with the Government of Finland, and collaborating with the IEEE Standards Association, the Berkman Klein Centre for Internet & Society, the World Economic Forum, the 5Rights Foundation and other organizations that form part of Generation AI.