Previous U.S.-led efforts to find consensus on ending the war, most recently two rounds of talks in Abu Dhabi, the capital of the United Arab Emirates, have failed to resolve difficult issues, such as the future of Ukraine's Donbas industrial heartland that is largely occupied by Russian forces.
Speaking at the annual Munich Security Conference on Saturday, Zelenskyy repeatedly thanked American and European allies for helping Ukraine by providing air defense systems that protect infrastructure like power plants and "save lives."
"Russian attacks happen almost every night in Ukraine and at least once a week, massive strikes," he said, speaking in English. "Without you Americans, Europeans, and everyone who stands with us, it would have been very, very difficult to hold on."
He reiterated his belief that security guarantees for Ukraine must come before any peace agreement with Russia.
Zelenskyy said last week that the United States has given Ukraine and Russia a June deadline to reach a deal. Previous deadlines given by U.S. President Donald Trump have passed largely without consequence.