I would be interested in hearing the reaction to this podcast of forum members informed about Russia. Here Peter Zeihan claims Russia is in a demographic collapse (discussion starts at about 9 minutes in):
This guy is supposedly some kind of a big deal (he worked for Stratfor) but I noticed some blatant errors he made such as calling Russians and Belarusians fellow “Serbs”.
He does mention how populations and fertility contract when people move to cities.
IMHO he has some good points, but his biases are very clear, for every hard truth he uttered like the lack of transport capacity on the part of Russians, who are facing now a soft blockade via negation of service by most shipping lines in strategic ports (like deepwaters ports) since most shipping lines and ship owners are in the west and susceptible to blackmail and threats as well as more subtle means, he tells outright nonsense if not blatant lies like "everything is ok with American demographics", "Russia and China expulsion from the world economy will not affect the US, being the most isolated world power from Globalization" (his own words) when everyone that knows anything about industry and logistics understand that US is a mostly de-industrialized country and many of the capacities and knowledge base in manufacturing would have to be rebuilt for an indsutrial renaissance to happen (in a process that will take years). Let alone other factors like cognitive decline, education decline, lower birthrates, etc . etc.
All in all I wouldn't buy his book.