Interpol
In short
Interpol is the world's largest international police organisation that helps different countries work together to fight crime. It provides a secure way for police forces to share information and track criminals across borders.
In plain words
It is a global network that connects police from 196 different countries. Instead of catching criminals itself, it helps national police forces talk to each other and share data about international crimes.
A simple example
If a thief flees from London to Paris, the UK police can use Interpol to quickly share the suspect's details and fingerprints with the French police.
Why it matters
Crime often crosses national borders, making it hard for one country to solve alone. Interpol ensures that criminals cannot easily hide by simply moving to a different country.
Easy to mix up
Do not confuse it with a global police force that has its own agents making arrests; it only supports local police.