The US military has already cited facilities like Eglin air force base in Florida as being particularly at risk due to rising sea levels. Photograph: Joely Santiago/AP
The Pentagon was warned on Friday to stand guard against "climate surprises" which could throw off its efforts to secure America's future.
An expert report, prepared for the intelligence community by the National Academy of Sciences, warns that the security establishment is going to have start planning for natural disasters, sea-level rise, drought, epidemics and the other consequences of climate change.
The Pentagon already ranks climate change as a national security threat, putting US troops in danger around the world and adding fuel to existing conflicts. More than 30 US bases are threatened by sea level rise.
It has also identified potential new danger zones, such as sub-Saharan Africa.