600,000 dairy cows...
https://dairynews.today/milkypedia/country/sa/
They built up the herd size by growing alfalfa in the desert by pumping water from ancient aquifers. They have used up a significant portion and now import over 80% of their feed. They need to import 100% of the feed to meet their needs as their water dries up.
They bought ground in Arizona because it is grown in conditions like what they have experience with. They have been using the same alfalfa varieties.
Failure of the entire system is almost always is always at critical bottlenecks. Avoiding these bottlenecks is a key component of military and economic competency.
The U.S. military and economy has been declining for decades. Why? Consolidation of companies into mega-corporations. Less competition = more cost for less results. Less players also means more potential bottlenecks in the system.
It's been being held together by a shoestring for decades now. It's getting more and more unstable as time goes by. This is where gross incompetence at the leadership level can sink not just an industry but an entire nation.