This handout picture taken and released by the Ukrainian president press service on May 8, 2022 shows Ukraine's President Volodymyr Zelensky (R) shaking hands with Croatia's Prime minister Andrej Plenkovic prior to their talks in Kyiv. (Photo by Handout / UKRAINIAN PRESIDENTIAL PRESS SERVICE / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / UKRAINIAN PRESIDENTIAL PRESS SERVICE" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

This handout picture taken and released by the Ukrainian president press service on May 8, 2022 shows Ukraine's President Volodymyr Zelensky (R) and Croatia's Prime minister Andrej Plenkovic meeting in Kyiv. (Photo by UKRAINIAN PRESIDENTIAL PRESS SERVICE / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / UKRAINIAN PRESIDENTIAL PRESS SERVICE" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

This handout picture taken and released by the Ukrainian president press service on May 8, 2022 shows Ukraine's President Volodymyr Zelensky (R) welcoming Croatia's Prime minister Andrej Plenkovic before their meeting in Kyiv. (Photo by UKRAINIAN PRESIDENTIAL PRESS SERVICE / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / UKRAINIAN PRESIDENTIAL PRESS SERVICE" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

Andrii Holovine, priest of the Church of St. Andrew Pervozvannoho All Saints (L) shows Croatia's Prime minister Andrej Plenkovic (C) images of the victims as hevisits the site of a mass grave in the Ukrainian town of Bucha, near Kyiv on May 8, 2022, after meeting with Ukrainian President Volodymyr Zelensky. (Photo by GENYA SAVILOV / AFP)

Andrii Holovine, priest of the Church of St. Andrew Pervozvannoho All Saints (R) guides Croatia's Prime minister Andrej Plenkovic (L) visiting the site of a mass grave in the Ukrainian town of Bucha, near Kyiv on May 8, 2022, after meeting with Ukrainian President Volodymyr Zelensky. (Photo by GENYA SAVILOV / AFP)

Andrii Holovine, priest of the Church of St. Andrew Pervozvannoho All Saints centre,R) guides Croatia's Prime minister Andrej Plenkovic (centre, L) visiting the site of a mass grave in the Ukrainian town of Bucha, near Kyiv on May 8, 2022, after meeting with Ukrainian President Volodymyr Zelensky. (Photo by GENYA SAVILOV / AFP)