Ukrainian President Volodymyr Zelensky gave a basically upbeat assessment of Ukraine’s long-awaited “counteroffensive” against invading Russian forces but conceded “nobody knows” if there will be a major breakthrough this year in an interview with CNN on Tuesday. Zelensky added that he thinks “we will have more success” in the coming year, following a slower-than-expected start for the big counteroffensive. As in several other recent interviews, he disputed criticism that Ukraine’s push has deteriorated into a stalemate, pointing to gains made by his forces in the east of the country.