> And farms are failing. Climate change will accelerate that, so there will be food shortages within a few years.

This is the key one to watch out for. Prior food-based conflicts have sparked revolutions and civil wars. People can tolerate not having electricity, people can tolerate not having internet, people can tolerate not having gas.

But a lack of food, due to a wheat shortage which in turn was sparked by Siberian wildfires destroying a whole year's wheat crop in Russia, precipitated the Arab Spring and the subsequent civil wars, as well as the ascendancy of ISIS.