Ukrainian President Volodymyr Zelenskyy told the U.N. Security Council on Tuesday that the U.N. must bring war crimes charges against Russia leaders to show other potential war criminals “how they will be punished if the biggest one is punished.”

He also called for soldiers who savagely attacked civilians – and those who issued the orders – to face trial for the apparent massacre of civilians by Russian forces in and around Kyiv and other major cities.

The Russian military killed “anyone who served our country,” Zelenskyy said Tuesday. Women were shot outside their homes as they searched for friends and loves ones, he said. Zelenskyy reaffirmed that Ukrainian forces that retook cities found mass graves, revelations of atrocities and infrastructure destroyed by Russian forces.

“They killed entire families, adults and children, and they tried to burn their bodies,” Zelenskyy said of the Russian invaders.

Zelenskyy urged the U.N. to provide security guarantees to Ukraine. Since Russia holds veto power, however, the Security Council will be unable to act.

“What is the purpose of our organization? Its purpose is to maintain peace,” Zelenskyy said. “And now the U.N. Charter has been violated, starting with Article 1. What is the point of all the other articles?”

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Latest developments

► The Czech Republic is shipping old Soviet-built infantry vehicles and tanks to Ukraine, Czech lawmaker Ondrej Benesik said in a Twitter post. The Czech Republic is the first country to provide tanks to Ukraine.

► Deputy Chairman of the Russian Security Council Dmitry Medvedev dismissed the report of civilian deaths as propaganda, claiming Ukrainian forces killed their own people “in a bid to dehumanize Russia and tarnish its image as much as possible.”