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That the drought has been a factor in the war is easy to believe. That the drought was caused by climate change is almost surely a much shakier assertion. I remember a conversation with a climate change affirmer in which she said something similar. I said that the relationship was probably too complex to warrant such a broad conclusion. She said that a raindrop falling through warmer air would be more likely to evaporate before it reached the ground. That of course explains the belt of desert circling the globe at the equator.
(Map courtesy of whymap.org. Ok, well, maybe not "courtesy of". "Swiped from.")