In fiction, there's often a point where the good guys argue with each other or otherwise angst about having to decide whether to use a weapon of immense power (atomic bomb, death ray, etc.) that will probably not only kill their enemies, but result in a large number of civilian casualties.
Do We Have This?
Examples:
- The main plot of every Godzilla movie ever made where he's the Big Bad: should we use nuclear weapons?
- Real life: GWB's foreign policy from 2001-2008.
- Passing plot point in Independance Day. Nuclear weapons were used, but were ineffective.
- Tony Stark struggles with his conscience in the Iron Man movie.
- In the Dark Knight Returns, Batman tries to justify killing the Joker, but can't.