[A. Pole]

Why weren't they allowed to return home by the RSK authorities?

How the authorities of RSK erased from the surface of the Earth can disallow survivors from the return?

[Diocletian]

They had four years.

Why did they refuse 200,000 expelled Croats from returning to their homes for those 4 years?

[johnnyBbad]

...200,000 Krajina Serbs were driven from their homes and another 2,500 killed...

I've heard the toll was a few hundred, 7,000 and now 2,500.

Seems as confusing an issue as Srebrenica and Kosovo.