I don’t think Americans realize that we haven’t suffered a global war since 1945 precisely because global trade took over and nations’ economies became more interdependent than isolated.
These trade wars are signalling pretty much all countries in the world to become more self-sustaining and less dependent on each other. Countries who succeed will be more confident to enter armed conflict because they’ll have less to lose, and those with lots to gain will have every incentive to start or join a war against those who have resources.