Zelansky responded to Trump's "24-hour resolution of the conflict between Russia and Ukraine": why didn't he do it earlier?

[Zelansky responded to Trump's "24-hour resolution of the conflict between Russia and Ukraine": why didn't he do it earlier? According to a report by RT on June 16, in response to Trump's repeated statement that he would "resolve the conflict between Russia and Ukraine and achieve peace within 24 hours", Ukrainian President Zelansky responded in an interview with NBC, "Why didn't he do this earlier?" . "I don't think he can do it. I think that in today's world, no one can end the war just by talking to [Russian President] Putin. " Zelansky also said.