Ukraine’s President Volodymyr Zelensky raised the stakes ahead of a potential meeting with Vladimir Putin in Turkey by saying he wouldn’t hold talks with any Russian representative other than the president himself.

U.S. President Donald Trump on Wednesday said he was still considering whether to attend talks on the war in Ukraine planned for Thursday in Turkey but he does not know whether Russian President Vladimir Putin will go.

Zelenskyy told reporters in Kyiv that he will be in Ankara on Thursday to conduct the negotiations. He plans to meet with Turkish President Recep Tayyip Erdogan and the two will wait for Putin to arrive, he said. Zelenskyy said that if Putin chooses Istanbul to hold the meeting, then both leaders will travel there.