Ukraine's leadership will decide on its next steps for peace talks in Turkey once there is clarity on Russian President Vladimir Putin's participation, a Ukrainian diplomatic source told Reuters on Wednesday.

Ukrainian officials say Russia launched more than 100 drones, rejecting calls for a ceasefire as Zelenskyy says he'll "be waiting for Putin" to join him for direct talks in Turkey.

Moscow on Wednesday said it would send a delegation to Istanbul to meet with Ukrainian officials, bringing the two at-war countries together for direct talks.

Volodymyr Zelensky, who challenged Putin to meet him in person in Turkey, said he would decide his next "steps" based on who will represent Russia at the talks.

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.

Under Western pressure to agree to an unconditional 30-day ceasefire, Russian President Vladimir Putin and Ukrainian President Volodymyr Zelenskyy have agreed to meet for direct peace talks next week in Turkey.

President Donald Trump has repeatedly floated the possibility of scrapping his Middle East travel schedule and adding a stop to personally mediate Ukraine-Russia peace talks in Turkey.