On March 16, US President Joe Biden called Russian President Vladimir Putin a war criminal. Biden tweeted, “Putin is inflicting appalling devastation and horror on Ukraine — bombing apartment buildings and maternity wards.” In his tweet, Biden referred to reports that Russian troops took hostage doctors and patients in a Mariupol hospital. The US President tweeted, “These are atrocities. It is an outrage to the world.” On February 24, Russian President Vladimir Putin ordered a large-scale invasion of Ukraine. Watch the video to know more.