Beat me to it. Really, none of the films are American propaganda though. I mean, in the second one, American bureaucrats are knowingly abandoning POW's and doing all sorts of nefarious stuff. If I recall correctly, they don't want Rambo to actually find and rescue any POW's because then it will be a scandal that they were left behind in the first place and that American knowingly abandoned them. So they set Rambo up to fail, basically. And when Rambo catches on, he tells the politician behind it all that he's "coming for you." The politician and his bodyguard John Kreese are basically the biggest villains of the movie, bigger villains that the Viet Cong or the Russians.