This Paris, accord for us, treaty for the rest of the rest, only came to be, because the Copenhagen agreement failed, thanks to China for voting against it.  The Copenhagen deal was actually a better deal. If failed after is was revealed, from release e-mails that much of the global warming data was manufactured. In order to come to the conclusion research wanted.

"Around the world, climate change is a metastasizing danger, for some countries even an existential threat." 

 1) who are these counties and who are their leaders? 2) what form of government controls these countries? Why is it America's fault that some countries feel threaten? We cleaned are back yard, because of the liberty and freedom we enjoy. It's interesting that We the People, any where, being in charge is termed "man made" climate change, but political leader being charge, is some how is going to control climate change.