Rebels
Firstly, I will just add that I really like the film, which I have seen many times, & have it in a DVD collection with the first two.
The part which made me laugh & certainly dates it is when Rambo says he is supporting the rebels, who are fighting those murderous Russians, while now the same people are fighting those nasty Americans. Deja Vu. There is one part when the guide is informing Rambo that they will fail like all those that have tried to invade before. Obviously the Yanks hadn't been listening or us, even though we have failed before, & that was when we had an empire ruling the world.