This sounds like another way of saying widespread subsistence farming is a problem, which was essentially my point, not that it is strictly only a problem withi

This sounds like another way of saying widespread subsistence farming is a problem, which was essentially my point, not that it is strictly only a problem within national borders. If people have jobs, and make money, and buy food instead of growing it, then they don't face starvation because of crop failures and don't have to migrate. You seem to be opposed to "industrial agricultural practices", that I'd assumed were by definition the solution to the problem.