A damaged Russian tank appears in the demolished city center of Trostyanets after Ukrainian forces expelled Russian troops from the city occupied by Russia at the beginning of the war with Ukraine, March 30, 2022. REUTERS / Thomas Peter “Of course they can win,” Pentagon spokesman John Kirby told a news conference. “The proof is literally in the results you see every day; they can definitely win.” Sign up now for FREE unlimited access to Reuters.com Register Report by Phil Stewart and Idrees Ali. Editing by Howard Goller Our role models: The Thomson Reuters Trust Principles.