Four graphs are displayed with the last one annotated as this:
So, without any official policy or Kyoto Treaty, US emissions are falling like a rock. Data shows on a territorial scale, much the same:
No elephants in the room there. That China verbal commitment of leveling out emissions by 2030 certainly looks promising. Essentially, at +1500 GtC/yr/decade, China will level out about 5500GtC/yr, maybe.
China emissions would more than double the current US + EU28 emissions.