Why go so far back? The concept of countries economically supporting other countries war efforts is incredibly common. USA during WW2 supported Britain economically to a large degree before joining the war in the final years without the Axis powers declaring war. Go back to the revolution of the colonies France economically and sometimes directly militarily supported the colonies without a declaration of war from Great Britain. You are basically describing proxy wars which have been a staple of great powers throughout history. This is nothing new, post comes of as kind of ignorant of history honestly.
Why go so far back? The concept of countries economically supporting other countries war efforts is incredibly common. USA during WW2 supported Britain economically to a large degree before joining the war in the final years without the Axis powers declaring war. Go back to the revolution of the colonies France economically and sometimes directly militarily supported the colonies without a declaration of war from Great Britain. You are basically describing proxy wars which have been a staple of great powers throughout history. This is nothing new, post comes of as kind of ignorant of history honestly.