It is very odd to see people in U.S. uniforms saying positive things about the Afghan resistance, the same folks we've been fighting for the last 10 or so years. More to the point, today's enemy is portrayed as a bunch of good guys, patriots defending their country.
The film is a typical Rambo shoot-'em-up with lots of bombs, IEDs, and military hardware. It is no worse and no better than the other three Rambo films.
In Rambo III the Soviets play the role the U.S. (and allies) play today - very weird. Watch it for the odd feeling of seeing the hero fighting for, not against, today's enemy.