BELGRADE (AFP) -- Serbia and Russia issued stark Kosovo warnings Tuesday in a last-gasp bid to stave off an imminent unilateral declaration of independence by the Albanian-majority Serbian province.

But despite their latest warnings, Kosovo leaders pressed ahead with plans for the historic announcement, putting the final touches on their declaration, constitution and celebration plans.
""We will not let such a creation exist, even for a moment,"" Serbian Prime Minister Vojislav Kostunica said as Belgrade itself finalized an ""action plan"" on how to respond.
Authorities in Belgrade would ""annul all illegal acts in relation to a unilateral proclamation of this fake state on Serbia's soil,"" Kostunica said in a statement carried by Beta news agency.
Meanwhile, pro-Western Serbian President Boris Tadic called for ""peace and restraint"" in his country, saying it ""must remain united and responsible when defending its integrity and sovereignty"".
""I call for peace, responsibility and restraint, I call on all parties to put aside their interests so the state can act responsibly in this crisis situation,"" he said in a statement.
In Geneva, Russian Foreign Minister Sergei Lavrov warned any unilateral declaration of independence by Kosovo would ""undermine"" European security and the UN Charter.
""It would result in a chain reaction in many parts of the world including Europe,"" Lavrov said.
Russia's first deputy prime minister Sergei Ivanov earlier warned that if EU countries recognize Kosovan independence, they should also recognize the self-proclaimed Turkish republic of northern Cyprus.
""What we see is an absolute prevalence of double standard, we can't skip international law,"" Lavrov said.
Kosovo's Albanian-dominated parliament is expected to proclaim independence ahead of a meeting of European Union foreign ministers set for Monday.
Pristina's officials said the parliament would meet on Friday to discuss several draft laws, but with no declaration of independence on its agenda.
Kosovo's move to separate from Serbia is backed by most members of the 27-nation European bloc and the United States, but is bitterly opposed by Russia, which has long had strong ties with Belgrade.
Cyprus is among six EU member states, some with territorial issues of their own, who remain openly hostile to the idea of Kosovo's independence.
Spain, with its Basque and Catalan separatists, has also said it will not recognize Kosovo. Greece, Bulgaria, Romania and Slovakia are also opposed.
Portugal's Foreign Minister Luis Amado said Tuesday it would withhold judgment to see ""when and how independence will be declared"", but called for a ""common"" EU stance on the issue.
Some observers in Kosovo fear a unilateral declaration could result in the partition of Kosovo, outbreaks of violence, and a refugee crisis.
Ahead of the expected declaration, NATO has bolstered its troop numbers in the Serb-populated north of Kosovo, where the United Nations has also increased the international police presence.
Belgrade, whose National Security Council discussed Kosovo on Tuesday, has also warned it will take legal action against nations that recognize its independence.