There are lots of risks, and those are not at all the largest ones. The entire world relies on international agricultural trade and it's never been better fed.
One reason is that the resources are much greater - if one place has a bad year, another can have a good year. Also, each location can produce what it does best, what its land, capital, skills, and infrastructure best support. Then other locations do what they do best, and we get the most economical, the best of everything.
Economic nationalism is, among other things, a ruse by some businesses to monopolize markets (not having competition) and get subsidized by the public.
One reason is that the resources are much greater - if one place has a bad year, another can have a good year. Also, each location can produce what it does best, what its land, capital, skills, and infrastructure best support. Then other locations do what they do best, and we get the most economical, the best of everything.
Economic nationalism is, among other things, a ruse by some businesses to monopolize markets (not having competition) and get subsidized by the public.