"45 countries will coordinate the investigation of war crimes committed in Ukraine," Andriy Yermak, the head of the Office of the President of Ukraine, wrote on Twitter, APA reports.
"The United States and more than 40 other countries agreed on Thursday (Jul 14) to coordinate investigations into suspected war crimes in Ukraine, shortly after what Kyiv said was a Russian missile strike that killed civilians far from front lines."
Ukrainian President Volodymyr Zelenskyy told the international conference that Russian missiles had struck two community centers in the west of Ukraine, killing 20 people, including three children, and wounding many more.
Russia has repeatedly denied involvement in war crimes and deliberately targeted civilians since it invaded Ukraine in February. It says it launched a "special military operation" to protect Russian speakers and root out dangerous nationalists. Ukraine says Moscow is waging an unprovoked war of conquest.
"Today in the morning, Russian missiles hit our city of Vinnytsia, an ordinary, peaceful city. Cruise missiles hit two community facilities, houses were destroyed, a medical center was destroyed, cars and trams were (set) on fire," Zelensky said by video link. "This is the act of Russian terror."
The Russian defense ministry did not immediately comment on the reports from Vinnytsia.
On Thursday, 45 countries at the conference in The Hague - headquarters of the International Criminal Court (ICC) - signed a political declaration to work together on investigations into war crimes in Ukraine.
Those countries included European Union states as well as Britain, the United States, Canada, Mexico, and Australia.