There is no Communist country, only those that practice various forms of capitalism, including state capitalism. Cuba is one of them and has been moving towards localization because of peak oil. For more details, view
http://www.powerofcommunity.orgThe U.S., China, and other countries will follow. The only ones who think otherwise believe that peak oil is a hoax and that the U.S. economy is "recovering."
The global economy is geared towards free market capitalism, which requires continuous economic growth through increasing production and consumption of resources, in turn supported by increasing amounts of credit, leading to a middle class lifestyle. That is why production and consumption of resources, including oil, money supply, and human population have been increasing significantly.
The problem is that increasing amounts of credit eventually lead to credit bubbles popping, and that's what we saw last 2008. More will follow.
Also, increasing production and consumption of resources leads to a peak in production, and eventually, a decline. Peak oil is an example of that.
Increasing human population because of longer life expectancy rates and lower infant mortality rates leads to increasing consumption of resources. In addition, as more people become part of the middle class, their consumption of resources also increases.
Thus, we have increasing production of resources, eventually leading to peak oil. Meanwhile, people become healthier, increase in number, and need more resources, thus increasing demand for resources. Since resources such as oil are limited, then the system cannot be sustained, and more people will be forced to decrease consumption of resources. With that, life expectancy rates will decrease and infant mortality rates will rise. There will also be more conflict as people fight over remaining resources.