Useful links:
https://climateandsecurity.files.wordpress.com/2019/07/implications-of-climate-change-for-us-army_army-war-college_2019.pdf
https://climateandsecurity.org/2019/08/01/army-war-college-the-u-s-military-is-precariously-underprepared-for-climate-change
https://www.vice.com/en_us/article/mbmkz8/us-military-could-collapse-within-20-years-due-to-climate-change-report-commissioned-by-pentagon-says