Ukrainian President Volodymyr Zelenskiy takes his "victory plan" to the European Union and NATO on Thursday, pitching for a NATO membership invitation and a major increase in military support for Kyiv's campaign against Russia's invasion.

Zelenskiy's plan contains requests that Ukraine's allies have so far declined to grant, such as a call for an invitation to join the U.S.-led NATO military alliance and permission to use Western weapons to strike deep inside Russia.

Zelenskiy presented the plan to Ukraine's parliament on Wednesday at a critical time, as Moscow's forces advance in the east, a bleak winter of power cuts looms and a U.S. presidential election casts uncertainty over the future of Western support.

On Thursday, he brings the plan, which he said could end the war "no later than next year", to a summit of European Union leaders and a meeting of NATO defence ministers, both in Brussels.

He has already presented the five-point blueprint, which Zelenskiy said has three secret annexes, to key Western leaders such as U.S. President Joe Biden. While voicing strong support for Kyiv, none has given the plan a full-throated endorsement.

NATO Secretary General Mark Rutte said on Wednesday the plan represented "a strong signal" from Zelenskiy but added: "That doesn't mean that I here can say I support the whole plan. That would be a bit difficult, because there are many issues."

Rutte said NATO's 32 members would have to discuss the plan in detail to understand it better.

"You will have maybe some different views on particular aspects of the plan, but that doesn't say that we are not standing squarely behind Ukraine," he said.

NATO MEMBERSHIP CALL

NATO has declared that Ukraine will become a member, without saying when. But it cannot join while at war, as this would draw the alliance directly into a conflict with Russia.

Russian President Vladimir Putin has cited Ukraine's potential membership of NATO as a reason for the invasion.

Zelenskiy argued NATO could issue an invitation now, even if membership itself comes further down the line.

"We understand that NATO membership is a matter for the future, not the present," he told the Ukrainian parliament.

"But Putin must see that his geopolitical calculations are failing. The Russian people must feel this, that their 'tsar' has lost geopolitically to the world."

The Kremlin said it was too early to comment in detail on the plan, but that Kyiv needed to "sober up" and realise the futility of the policies it was pursuing.

Zelenskiy said his plan also proposes establishing a "comprehensive non-nuclear strategic deterrence package" inside Ukraine to protect against threats from Russia and to destroy its military power. He did not elaborate.

The plan also offers the West a role in developing Ukraine's natural mineral resources and proposes Ukrainian troops could replace some U.S. forces in Europe.