Leaders of the European Union have gathered in Brussels for a summit set to decide on a proposal to use frozen Russian assets to fund Ukraine's economic and military needs in the coming years that Poland likened to a choice between "money today or blood tomorrow."

The EU summit on December 18 comes a day after Russian President Vladimir Putin crudely criticized the bloc's leaders, using a word that can be translated as "young swine," and reiterated assertions that Moscow will achieve the goals of its war on Ukraine by force if a US push for peace does not produce a deal that meets its demands.

Ukrainian President Volodymyr Zelenskyy arrived in Brussels and spoke at the meeting, telling the summit the current proposal of a loan backed by the frozen assets is preferable, but that ultimately it doesn't matter how the funds are utilized, just as long as a solution is found.

Graphic: US And EU Military Aid Allocations To Ukraine

If in the spring, Ukraine does not receive the corresponding tranche -- which, in the event of peace, will be used for the countrys reconstruction, and in the event of continued war, for other priorities, above all drone production -- Ukraines drone production will be reduced several fold, he told reporters at a press conference after addressing the summit behind closed doors.

Ukraine currently faces a foreign aid shortfall of some $53 billion to $59 billion next year, he added.

Western countries have supported the war-torn country with both direct budgetary support and military aid since Russias full-scale invasion nearly four years ago, but the upcoming period may be different.

The United States has signaled that it most likely wont send more cash, putting the onus on the EU and other G7 countries to step up -- and to do so soon.

Some 140 billion euros ($165 billion) of Russian state assets are being held in the Belgian-based financial markets company Euroclear, while an additional 25 billion euros of Russian state assets are held in banks across the EU, mainly in France but also in a Belgian private bank, Cyprus, and Germany.

The reparations loan is part of a wider financial package that is worth up to 210 billion euros, according to the European Commission. This also includes 45 billion eurosthat will be used to repay a G7 loan to Ukraine from 2024.

While most of the EU's 27 members are in favor of using the assets to back the loan, Belgium fears the plan could leave it legally vulnerable, and other countries including Italy have also expressed doubts.

SEE ALSO:

Brussels Pushes Plan To Use Frozen Russian Assets For Ukraine Financing

"Now we have a simple choice - either money today or blood tomorrow. And I am not talking about Ukraine only, I am talking about Europe," Polish Prime Minister Donald Tusk said as EU leaders arrived at the summit in Brussels.

"This is our decision to make and only ours."

European Commission chief Ursula von der Leyen said she would not leave the summit without agreement on how to finance Ukraine over the next two years.

German Chancellor Friedrich Merz issued a stark warning earlier this week, saying failure would mean "the European Union's ability to act will be severely damaged for years, if not longer, and we will show the world that we are incapable of standing together and acting at such a crucial moment in our history."

Swedish EU Affairs Minister added in an interview with RFE/RL in Brussels on December 18 that "we have to have some kind of agreement that really makes sure that we have a financing support for Ukraine."

"It's the most realistic option we have at the table, something we should be able to agree on. But it is also the solution that really means that Russia is also held accountable and must pay for the damage that they have caused Ukraine."

SEE ALSO:

The Donbas And Beyond: The Territorial Barriers To Peace In Ukraine

In a combative speech at an annual Defense Ministry event on December 17, Putin sought to blame Europe and Ukraine in advance for any failure of the peace efforts, saying that Russia will take more land by force if Kyiv and European leaders he described as "young swine" do not take the right approach to US proposals.

"If the opposing side and their foreign patrons refuse to engage in substantive discussions, Russia will achieve the liberation of its historical lands by military means," Putin said, casting cold water on any proposal that calls for Moscow to make territorial concessions.

Moscow currently controls nearly one-fifth of Ukraine, and Russian officials have repeatedly said they won't compromise on the five Ukrainian regions that Putin baselessly claims are Russian.

A particular sticking point in the weeks-long flurry of negotiations involving the US, Ukraine, Europe, and Russia has been the portion of the Donetsk region that Ukrainian forces still hold.

With reporting by RFE/RL's Ukrainian Service, RFE/RL Ukrainian Service correspondent Zoriana Stepanenko in Brussels, RFE/RL Europe Editor Rikard Jozwiak, and Reuters