The Global Assembly was an attempt to redress some of the failings of the COP process of climate summits, which have been running for almost thirty years. This initiative was not only the world’s first global citizens’ assembly; it was also an effort to provide the blueprint for a new piece of global governance infrastructure, owned and led by a representative group of the world’s citizens, over whom no one could have undue influence. But did the Global Assembly run successfully and have an impact? And can it help engage global citizens in climate change decisions on a long-term basis?