Dr. Gwynne Dyer, a renowned journalist and writer, discusses the intersection between climate change and politics in a speech given at the University of British Columbia in 2010. He reveals that the Pentagon, even under the Bush administration, was quietly interested in climate change and its potential impacts. Dyer explains that the public debate is not acknowledging the true severity and speed of climate change, as the numbers being used are outdated and conservative. The Hadley Centre, for example, predicted an average global temperature rise of 4 degrees Celsius by 2060, which would have disastrous consequences for food production and result in mass death. Dyer emphasizes that the military takes climate change seriously due to the geopolitical implications, as countries closer to the equator will suffer more.
https://spaswell.wordpress.com/2016/11/18/dr-gwynne-dyer-geopolitics-in-a-hotter-world-ubc-talk-transcribed-sept-2010/