[Andrew_nenakhov]

It is extremely unlikely. Go to google maps, somewhere near perm and zoom to a level where you can see individual buildings. Then try scrolling east to Vladivostok, and notice how long it will take and how many trees are there.

[akiselev]

It happens slowly, then all at once...

Worst case predictions for complete loss of the ice sheets is 500 years [1] while the desertification of Mesopotamia only took a few hundred years of pre-Common era agriculture. Russia's forests are vast but we're on an industrial speed run and I've seen how fast the populations can collapse here in California thanks to some beetles and a single extended drought. Every time I visit my hometown I see the same thing happening in Russia in an ecosystem and society that are, like California and its chaparrals, completely unprepared for increasingly hostile weather.

[1] https://www.discovermagazine.com/environment/will-antarctica...

[vikramkr]

The example I had in mind was the Sahara, or even just the evidence that the U.S. modwest has gone through significant periods of time as a desert. In ye olden days there might have been rainforest at the poles, but near the equator things were less lush.