In the US, we have sextupled 155mm shell production.
If war breaks out, you need to feed people, maintain roads, build vehicles, etc.
If war breaks out, you need to feed people, maintain roads, build vehicles, etc.
Note that I actually agree with your position but this is an interesting discussion on a topic I hadn't thought about deeply enough!
This happened before, twice. The solution was convoys, it worked both times.
Right now Lula wants to form a coalition with Russia, so what makes you think, in case of war, Brazil would keep selling to the EU? Maybe because USA would threathen Brazil? In that case they would focus on feeding themselves, and not the EU still.
In the entirety of human history, a base war tactic is Siege. What makes you think nobody will try it again?