Using the phrase in its actual English denotation, in which it means the climate is different than it was before, rather than the Newspeak version which means more or less the same as "human fossil fuel use", the analysis is correct. Desertification (a sustained drought long enough to change flora and fauna in a region), a return of the glaciers in a new Ice Age, or any shift in climate that disrupts agriculture to the point famines arise outside of war zones and North Korea (which I think is now the only place so rigidly adhering to Stalinism that they manage to make war-free famines by government foolishness) would likely cause civil wars in some places.
