How was it a Hoax????????
We simply changed Eastern Europe from Nazi satellites to Soviet satellites, and while preaching about freedom for Europe we were helping them hold onto their colonies. As for Japan, they went from allies in WWI to enemies because they expected an earlier Roosevelt’s pledge about their expanded role in the Pacific to be honored.
At this point most justifications for the war center around Nazi & Japanese atrocities, which certainly weren’t the reasons given to the US public at the time.