Serbia will not allow itself to be humiliated by a "puppet state" on its territory, Prime Minister Vojislav Kostunica said today.
The ethnic Albanian majority of Kosovo plans to declare independence on Sunday and is expected to win swift recognition from major Western powers despite opposition from Serbia and Russia.
"There would be no greater humiliation for Serbia if it, in any way, signed or agreed in some indirect way to this puppet state", Mr Kostunica told the daily Glas Javnostinewspaper.
His divided coalition will close ranks today to adopt a document annulling the proclamation in advance.
"We need to focus on making important and historic decisions, to once and for all annul all acts of Albanian separatists and confirm that Kosovo is an integral part of Serbia," he said.
The government will also review its secret "action plans" designed to counter the declaration of independence. The plans cover security, diplomatic, legal, economic and social measures.
Kosovo's declaration comes almost nine years after Nato bombs drove out Serb forces to halt a wave of killings by Serb forces in a two year-war against separatist rebels.