Ukraine's President Volodymyr Zelenskyy has condemned a video circulating online that shows a Ukrainian being decapitated by "Russian occupiers." Yevgeny Prigozhin, the founder and financier of the Wagner private military company, has called for the entire Russian society to be mobilized in support of Moscow's war effort in Ukraine. The video has sparked outrage and condemnation from around the world, and Ukraine's security services have vowed to investigate and bring those responsible to justice.