FDR did more to destroy this country than any other President!
A) A political system versus an economic system. For example, USSR under Stalin had a totalitarian political system with communism guiding its economics. China today is a hybrid, with constrained "free enterprise" being largely controlled by the Chinese military.
The US today is a basket case waiting for a non-existent "magic bullet" - politically and economically. The point possibly missed is that you never get the "time" back, while the interest on the debt compounds, compounds, ... , etc.
B) As to WWII, see General Wedermeyer's book from 1958, The Wedermeyer Reports, for other perspectives on "Grand Strategy", who lost China, ..., etc.
C) released only a month ago, highly recommend George H. Nash's Freedom Betrayed: Herbert Hoover's Secret History of the Second World War and Its Aftermath.