U.S. Vice President Kamala Harris, Ukrainian President Volodymyr Zelenskyy, Swiss Federal Councillor Ignazio Cassis and Chancellor of Austria Karl Nehammer during the opening plenary session, during the Summit on peace in Ukraine, in Stansstad near Lucerne, Switzerland, Saturday, June 15, 2024. Heads of state from around the world gather on the Buergenstock Resort in central Switzerland for the Summit on Peace in Ukraine, on June 15 and 16. MICHAEL BUHOLZER/Pool via REUTERS