But those socialist bloc countries no longer exist. and they never had as big a carbon footprint as the West, anyhow. 

Unless the developed world redistributes the wealth it has made by using the atmosphere and the oceans as a free waste dump, the least developed nations in the global South are going to get creamed by climate change, just as they got creamed by colonialism and the Cold War.

Capitalism has a lot to answer for, no matter who proposes how the bill is paid.