Images have emerged of Ukrainian civilians lying dead on the streets of Bucha, with residents saying the victims were killed by Russian soldiers without any apparent provocation.
Russia has denied committing the atrocities and described the footage as a "staged performance".
The UK has joined the United States, France and Germany to call for an international investigation.
Sky's Defence and Security Editor Deborah Haynes visited Bucha - a warning her report contains images of dead bodies throughout.
For the latest developments in Ukraine: qrcode.skynews.com/skynews/ukraineblog
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