[danudey]

Not rain forests, but you don't need to be a rain forest to have a water supply.

https://en.wikipedia.org/wiki/Water_crisis_in_Iran

[PhantomGremlin]

I think this chart https://en.wikipedia.org/wiki/File:Iran_Population_%281880-2... might have a tad to do with it.

More people means more demand for water.

[philipov]

And "climate change" is a misleading word to call resource exhaustion caused by human populations outgrowing the carrying capacity of their environment. It's as if the humans are simply passive victims of external circumstances.