As the world's largest greenhouse gas emitter, China is quietly weighing whether to claim the mantle of global climate host in 2028 — a move that would place Beijing at the center of the very negotiations its own emissions most complicate. The consideration emerges at a moment of genuine geopolitical vacancy, with the United States having stepped back from climate leadership and India having withdrawn its own bid without explanation. Whether China ultimately steps forward or not, the deliberation itself reflects how climate diplomacy has become inseparable from the broader contest over who sha