system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How exactly do UN Peacekeeping forces (the deployed troops) ensure peace?

Couldn't unrest still persist even after their mandate is complete, and another conflict still take place?
gpt
It doesn't always work, but the idea is based around a show of force.  Essentially, the idea is that by having a large (sometimes larger than indigenous forces) peace keeping army in place, then whatever factions are warring will think twice before taking certain actions.   Essentially, it means that for fear of what ever retribution might be brought down on them by the peacekeeping force, should any of those  peacekeepers be injured, keeps the indigenous fighters from taking risky actions which might make things worse.