This is so political that I am hesitant to respond. This is not a hurricane that will come and go.

Suffice to say that such an event would pretty much trash the economic order of the world as we know it. The entire Covid event would be a mosquito bite in comparison. Global supply chains would cease to exist.

From an individual point of view, there is no substitute for access to a patch of fertile soil and the skills and materials to make it produce. This is a constant throughout history, and it always holds true. My 2c.