French European and Foreign Affairs Minister Catherine Colonna (L) talks with the Prosecutor General of Ukraine Iryna Venediktova at the French Embassy in Kyiv, on June 16, 2022. - The leaders of major EU powers France, Germany and Italy vowed on June 16 to help Ukraine defeat Russia and to rebuild its shattered cities, in a visit to a war-torn Kyiv suburb. (Photo by Ludovic MARIN / POOL / AFP)

This handout picture taken and released by the Ukrainian Prosecutor General office on June 15, 2022, shows Prosecutor General of Ukraine Iryna Venediktova (L) and Prosecutor of the International Criminal Court Karim Khan (R) visiting sites of alleged Russian war crimes in Kharkiv, amid Russian invasion of Ukraine. (Photo by Handout / Ukrainian Prosecutor General office / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO /UKRAINIAN PROSECUTOR GENERAL OFFICE " - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

This handout picture taken and released by the Ukrainian Prosecutor General office on June 15, 2022, shows Prosecutor General of Ukraine Iryna Venediktova (front, 2ndR) and Prosecutor of the International Criminal Court Karim Khan (R) visiting sites of alleged Russian war crimes in Kharkiv, amid Russian invasion of Ukraine. (Photo by Handout / Ukrainian Prosecutor General office / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO /UKRAINIAN PROSECUTOR GENERAL OFFICE " - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

This handout picture taken and released by the Ukrainian Prosecutor General office on June 15, 2022, shows Prosecutor General of Ukraine Iryna Venediktova (C) and Prosecutor of the International Criminal Court Karim Khan (2ndR) visiting sites of alleged Russian war crimes in Kharkiv, amid Russian invasion of Ukraine. (Photo by Handout / Ukrainian Prosecutor General office / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO /UKRAINIAN PROSECUTOR GENERAL OFFICE " - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

This handout picture taken and released by the Ukrainian Prosecutor General office on June 15, 2022, shows the Prosecutor of the International Criminal Court Karim Khan (C) visiting sites of alleged Russian war crimes in Kharkiv, amid Russian invasion of Ukraine. (Photo by Handout / Ukrainian Prosecutor General office / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO /UKRAINIAN PROSECUTOR GENERAL OFFICE " - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

This handout picture taken and released by the Ukrainian Prosecutor General office on June 15, 2022, shows the Prosecutor of the International Criminal Court Karim Khan (L) visiting sites of alleged Russian war crimes in Kharkiv, amid Russian invasion of Ukraine. (Photo by Handout / Ukrainian Prosecutor General office / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO /UKRAINIAN PROSECUTOR GENERAL OFFICE " - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

This handout picture taken and released by the Ukrainian Prosecutor General office on June 15, 2022, shows the Prosecutor of the International Criminal Court Karim Khan (C) gesturing as he visit sites of alleged Russian war crimes in Kharkiv, amid Russian invasion of Ukraine. (Photo by Handout / Ukrainian Prosecutor General office / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO /UKRAINIAN PROSECUTOR GENERAL OFFICE " - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

Ukraine's Prosecutor General Iryna Venediktova, center right, shows to U.S. ambassador to Ukraine Bridget Brink a destroyed building in Borodyanka, outskirts of Kyiv, Ukraine, Saturday, June 4, 2022. (AP Photo/Natacha Pisarenko)