"Some people came to me on the first days of the war, some people from Ukraine…They gave me the ultimatum from (Russian President Vladimir) Putin," Zelensky said on the sidelines of the World Economic Forum in Davos, Switzerland. "They said that I have to go, and they will change me (for) Medvedchuk (as president)."According to Zelensky, the ultimatum also demanded Ukraine recognize Russian occupation authorities in Donbas, change its constitution to commit to "neutrality," shrink its army to 50,000 troops, give up much of its weapon arsenal, and recognize Russian as an official language of Ukraine. "This was not a negotiation; it’s an ultimatum," Zelensky said, adding that Russia’s points were similar to those later presented during unsuccessful peace talks in 2022 that took place in Turkey.Formerly a Ukrainian lawmaker and businessman, Medvedchuk was among the leading pro-Russian figures in Ukraine before the full-scale invasion.