collapse of the old society

There's still thin snow on the high mountains to the NE (checking nasa worldview). Where the main river emerges from them is about 200m lower than Kabul city, but it must be possible to pump some up that much, and bring it thence (about 70km) with a pipe or canal. Probably chinese will do it, maybe bringing stuff via Wakhan, if nobody else helps.
Edit - zooming on opentopomap I see traces of part of such a canal, but it doesn't get as far (or as high) as Kabul.

But not the last.

Unfortunately, the world won't give a shit until Los Angeles or a similar "developed" city runs out of water Parable of the Sower style.