The draft was ultimately rejected. The RSK leadership refused to even receive the document until they secured a commitment that UN peacekeepers would stay, while the Croatian government preferred a military solution to regain its territory. Historical Outcome

Proposed in early 1995 by the "Zagreb 4" (ambassadors from the US, Russia, EU, and UN), this draft aimed to prevent further conflict by offering the Krajina Serbs significant autonomy within Croatia.

The phrase in this context most likely refers to the Z-4 Plan (officially titled "Draft Agreement on the Krajina, Slavonia, Southern Baranja and Western Sirmium"). The Z-4 Plan (Draft Agreement)

Despite the autonomy, the territory would remain under the internationally recognized sovereignty of the Republic of Croatia.