Why would American leadership be pushing towards war with Russia and China? America has given most of its manufacturing capability away while Russia and China have built up theirs.
If world war III were to break out today would America be able to keep up with the production to sustain it? Even if you were an American leader wouldn't first want to make sure your factories and other infrastructure was up to the task. Year after year, American roads and bridges get a grade of "D" and that's only while carrying civilian loads.