Ukrainian President Volodymyr Zelensky said on Sunday that he would refuse to recognize decisions made in talks between American and Russian officials about the war in his country.

President Donald Trump and Vice President Vladimir Putin recently discussed trying to end the war in Ukraine. Zelensky said in an interview that he was thankful for American support in the war but cautioned that they “can’t really make a deal” to end the three-year conflict “without us.”

“I will never accept any decisions between the United States and Russia about Ukraine,” he said. “Never, and our people, never, and our adults, and children, and everybody, it can’t be so.”

The comments came after White House Special Envoy Steve Witkoff confirmed that he and National Security Adviser Michael Waltz would travel to Saudi Arabia to meet with Russian officials and “hopefully make some really good progress” on ending the war in Eastern Europe.

Witkoff denied that Zelensky and his administration were isolated from the negotiations, asserting that “Ukraine is part of the talks” and “I don’t think this is about excluding anybody.”

Trump said on social media last week that he spoke with both Putin and Zelensky in separate phone calls about the war. The commander-in-chief remarked that “millions of people have died in a war that would not have happened if I were President, but it did happen, so it must end.”

Russian Press Secretary Dmitry Peskov said in a statement that the “Middle East settlement, the Iranian nuclear program, and bilateral Russian-American relations in the economic area were talked about during the conversation.” Putin invited Trump to visit Moscow and voiced “readiness to receive American officials in Russia regarding areas of mutual interest.”