Been expecting movements of refugees around Australia itself from volcanic and tectonic events for years. Imagined this scenario many times, including Darwin evacuating down into Queensland in large caravans of people seeking to escape ash fallout from the ring of fire.
Supervolcanos all over the planet getting ready to blow.
Noctilucent clouds now seen much farther towards the equator than ever before
This equals that. With Homo Sapiens, resource scarcity and economic stress always leads to warfare. When the only mental weapon you have is a hammer, every problem seems to be a nail.
Ice Age II = World War III.