Ukrainian President Volodymyr Zelensky told attendees at Davos that he doesn't "understand who to talk to" on the Russian side in response to a question about the possibility of peace talks.

"I do not quite understand whether he (Putin) is alive or whether he makes decisions, or who is making decisions," he said.

"I don't quite understand how you can promise the European leaders one thing and start a war the next day," Zelensky added.