Truman should've told the French to go fuck themselves, if they wanted in on the marshal plan they could give up on trying to oppress people on the other side of the world.
That screwup was a product of Truman not realizing he could tell France to go screw, because the French needed the U.S. in Europe as much as the U.S. needed France (agruably more, given the Marshall Plan). It's also in no small measure thanks to FDR, who FWI hear ran foreign policy himself & didn't decide what to do about Vietnam before he died (or tell Truman his plans, if he had any).I think it's one of histories biggest "wtf"'s that Ho Chi Minh who was supplied and supported by the US during WWII and etc ended up fighting them, but I guess thats just one of those "you dont see it coming" kind of things