The refinery is the second-largest owned by Lukoil and a key producer of petroleum products in Russia's Southern Federal District.

By tying its defense needs to a major boost for U.S. industry, Ukraine hopes to turn its request into an investment opportunity that appeals directly to American interests. The proposal also includes a separate $50 billion agreement for producing drones with Ukrainian companies.

"The American president spoke with the Russian president on the phone and agreed that there would be a meeting between the Russian president and the Ukrainian president within the next two weeks," German Chancellor Friedrich Merz said.

"That will be part of the discussions, which will now start. We will try to bring them to the next stage of understanding over the coming days and weeks, of course," NATO Secretary General Mark Rutte said.

The number includes 890 casualties Russian forces suffered just over the past day.

"And we will come to a resolution today, I think, on almost everything, including probably the security," Trump said in the East Room, speaking alongside Zelensky and European leaders.

"(T)he question of territory is a question that we will leave between me and Putin. Security guarantees will probably be negotiated with our partners," President Volodymyr Zelensky said.

Russia launched a wave of missile and drone attacks against Ukrainian cities on Aug. 19, hours after President Volodymyr Zelensky concluded peace talks with U.S. President Donald Trump at the White House.

Ukrainian Foreign Minister Andrii Sybiha neither confirmed nor denied the account of the latest attack but wrote on X that Hungary "can now send complaints and threats" to Moscow, not Kyiv.

According to Russian foreign policy advisor Yuri Ushakov, the call took place after midnight Moscow time. Trump reportedly briefed Putin on his negotiations with Zelensky and the European leaders.

In the Oval Office, Zelensky said Ukraine wants to end the war and welcomed Trump's signal of openness to trilateral negotiations with Russian President Vladimir Putin. "We are ready for trilateral talks. As president said, it's a good signal about trilateral," Zelensky told reporters.

European Commission President Ursula von der Leyen also backed "Article 5-like security guarantees" for Ukraine, saying the country must become "a steel porcupine, indigestible for potential invaders."