I bet it had a couple of choices before this point. The government made all those choices as they came. Now it's being made for them.
I feel sorry for the people of Tehran.
I wonder how soon every other place is due. Sooner or later the same choice will be made for all of us.
The issue is not that we can't live anywhere. The earth is greener than before. The issue is that there are a small number of locations where humans can't live anymore, especially not without good water management. Obviously, people don't want to or can't leave, and some of the locations that didn't use to, but now really do require proper management have a LOT of people.
Teheran has more water than a century ago. But more does not mean infinite.
The entire inside of India used to be desert. That desert did not just reduce in size, it split in three pieces and two of them shrunk to zero, and even the third is turning green. The Sahara too is less than half the size it used to be.
https://theweek.com/environment/sahara-desert-turning-green
Also, large regions closer to the poles are becoming warmer ... and that means livable.
And yes, elsewhere deserts are becoming worse, for instance in Spain.
It doesn't really matter though, as humans are not exactly short on space, and this means we'll need to move large populations in the next century.
https://en.wikipedia.org/wiki/Our_Planet https://www.ourplanet.com/ https://www.ourplanet.com/en/explore/fresh-water/ https://www.youtube.com/watch?v=R2DU85qLfJQ
I don't understand how you think what is entially spam will bolster your cause.
It's just plain rude. But somehow it's common, even with normally intelligent people like you. Do think a few extra steps, next time, please.
Climate change (no rain) but especially bad water mgt.
For a fraction of what they spent on that they could’ve have desalination plants in the Caspian Sea and a water way capable of providing water to their capital.