Speaking for the first time to the United Nations' highest body charged with ensuring international peace and security, President Zelenskyy laid out some of the evidence of Russian atrocities in Bucha.
Ukrainian President Volodymyr Zelenskyy told the UN Security Council on Tuesday that the Russian military must be brought to justice immediately for war crimes, accusing the Kremlin's troops of the worst atrocities since World War II.
The Ukrainian leader made his plea via video as grisly evidence continued to emerge of civilian massacres carried out by Russian forces on the outskirts of Kyiv before they pulled back away from the capital.
The images, particularly from the town of Bucha, have stirred global revulsion and led to demands for tougher sanctions and war crime charges.
Making his first appearance before the UN's highest body charged with ensuring international peace and security, Zelenskyy said the Russian troops are no different from other terrorists like the so-called Islamic State group.
He presented the council with a brief video featuring images of atrocities that ended with the words “Stop Russian Aggression.”
Zelenskyy stressed that Bucha was only one place and that there are more with similar horrors, calling for a tribunal similar to the one that was set up at Nuremberg to try war criminals after World War II.
The grisly scenes of battered and burned bodies and evidence that some of the dead were bound and shot in the head have led Western nations to expel dozens more of Moscow's diplomats and propose further sanctions, including a ban on coal imports from Russia.
The head of NATO, meanwhile, warned that Russia is regrouping its forces in order to deploy them to eastern and southern Ukraine for a “crucial phase of the war" and said that more horrors may come to light as Russian troops continue to pull back in the north.
“When and if they withdraw their troops and Ukrainian troops take over, I’m afraid they will see more mass graves, more atrocities and more examples of of war crimes,” NATO Secretary-General Jens Stoltenberg said.
Ukrainian officials said the bodies of at least 410 civilians have been found in towns around Kyiv that were recaptured from Russian forces and that a “torture chamber” was discovered in Bucha.
Zelenskyy told the Security Council there was “not a single crime” that Russian troops had not committed in Bucha.
“The Russian military searched for and purposefully killed anyone who served our country. They shot and killed women outside their houses when they just tried to call someone who is alive. They killed entire families, adults and children, and they tried to burn the bodies,” he said.
Police and other investigators walked the silent streets of Bucha on Tuesday, taking notes on bodies that residents showed them.
Survivors who hid in their homes during the monthlong Russian occupation of the town, many of them past middle age, wandered past charred tanks and jagged window panes with plastic bags of food and other humanitarian aid. Red Cross workers checked in on intact homes.
Journalists in the town have counted dozens of corpses in civilian clothes. Many appeared to have been shot at close range, and some had their hands bound or their flesh burned. A mass grave in a churchyard held bodies wrapped in plastic.
The Kremlin has denounced the images as fake and suggested the scenes were staged by the Ukrainians. But high-resolution satellite imagery from Maxar Technologies showed that many of the bodies had been lying in the open for weeks, during the time that Russian forces were in the town.
US Secretary of State Antony Blinken said the images from Bucha revealed “a deliberate campaign to kill, to torture, to rape, to commit atrocities.” He said the reports of atrocities were “more than credible," and that the US and other countries will seek to hold the culprits accountable.
As Western leaders condemned the killings in Bucha, Italy, Spain and Denmark expelled dozens of Russian diplomats on Tuesday, following moves by Germany and France. Hundreds of Russian diplomats have been sent home since the start of the invasion, many accused of being spies.
Kremlin spokesman Dmitry Peskov called the expulsions a “short-sighted” measure that would complicate communication and warned they would be met with “reciprocal steps”.
In another show of support, the European Union’s executive branch proposed a ban on coal imports from Russia, in what would be the first sanctions from the bloc targeting the country’s lucrative energy industry over the war. That coal imports amount to an estimated €4 billion per year.
European Commission President Ursula von der Leyen denounced Moscow's “heinous crimes” around Kyiv.
The 27-nation EU has been a steadfast backer of Ukraine since the Russian invasion began on 24 February and has already pushed through four rounds of sanctions -- but Ukrainian officials have asked for more.