In a 2007 report by the CNA Military Advisory Board, General Gordon R. Sullivan stated: “People are saying they want to be perfectly convinced about climate science projections…But speaking as a soldier, we never have 100 percent certainty. If you wait until you have 100 percent certainty, something bad is going to happen on the battlefield.”

The national security establishment in the United States, including the U.S. military and the U.S. intelligence community, understand that climate change is a national security threat, and that we cannot wait for 100% certainty before acting to mitigate and adapt to its effects. But not only do they understand it, they plan for it – considering it’s implications in strategic documents like the Quadrennial Defense Review, and setting up an office within the CIA called the Center for Climate Change and National Security. But why? (more…)