“The military profession, especially is the long-established great powers, is deeply pessimistic about the likelihood that people and countries will behave well under stress. Professional officers are trained to think in terms of emergent threats, and this [climate change] is as big a threat as you are going to find. Never mind what the pundits are telling the public about the perils of climate change; what are the military strategists telling their governments. This will tell us a great deal about the probable shape of the future, although it may not tell any anything that we want to hear.”
Source : "Climate Wars: The Fight for Survival as the World Overheats". Book by Gwynne Dyer, 2008.