The biggest issue is China. Who is going to stop China's destruction of the climate?
http://www.climateaction.org/news/china-has-already-hit-its-...
I find it interesting that they are in a better position to take action than most democracies. They can turn off heating for millions of people for the greater good without having to worry about election results:
https://www.forbes.com/sites/chuckdevore/2019/01/23/its-cold...