It is not surprising, of course, that if one has lots of money that isn't really his (taxpayers') but has to spend it, "creativity" takes the better of him. CIA spending money to try to control climate, in "aid" of finding how climate can affect national security? That's like spending money on how to delay sunrise because doing so might actually be good for national security. Then again, we've heard stories about NASA trying to prove the big bang theory.
According to US website 'Mother Jones' the CIA is helping fund a study by the National Academy of Sciences (NAS) that will investigate whether humans could use geoengineering - which is defined as deliberate and large-scale intervention in the Earth's climatic system - to stop climate change.
Or from another news outlet ...
A 2008 study by the National Intelligence Council concluded that climate change posted a serious threat to national security.“Climate change and climate-change policies could affect … domestic stability in a number of key states, the opening of new sea lanes and access to raw materials, and the global economy more broadly -- with significant geopolitical consequences,” it said.