We’re bleary-eyed, brandishing banners in the early morning light. Rae Bainteiti, a 25-year-old youth delegate from the Pacific island nation of Kiribati, jokes that this might be the first and last winter he’ll wear a puffer jacket in the Parisian cold. Stepping towards the press encircling our demonstration, he addresses the crowd in a suddenly serious tone.  “Our lives,” he says, “are not negotiable.” As true as that may be, in the plenary rooms beyond, ministers are putting brackets around his future.