RK, I understand what you're saying, but at least Pavel knew Gant succeeded in their mission before he died, and then he chose his best option. Ok, not really a happy moment but...
In the book he never knew, IIRC he dies in an accident caused by his injuries after a parked shootout with the KGB.
This isn't a popular sentiment but in many cases I actually prefer the movie version to the book (e.g. ending to The Hunt for Red October), using the book to fill in the many details left out of the movie. Sometimes a book goes off into too many tangents which makes it too long, like the rape and then love interest in Red Storm Rising. It was totally unnecessary and added nothing relevant to the story IMO, other than to paint the enemy as heartless demons.