Erm - there is such thing as the concept of strategical industries. And it is neither a European thing or a modern thing either, but don't let that stop you from spouting a narrative where Europe is the bad guy in an international landscape where they have transferred voluntarily or not such much technology to China.
Milk and yogurt certainly are, also bread, also lots of food stuff. As far as I know almost no country has gone isolationist on that (with a few exceptions, such as China, which is at least trying).
One can win a grand war without access to uranium, but you need access to bread and milk if you don’t want to repeat Germany’s WW1 fate.
You don't say! Completely irrelevant, since agricultural policy for the EU is made by the EU, and individual countries then write their local laws accordingly.
