Ukraine president urges Joe Biden and Xi Jinping to ‘show your leadership’ and send message to Moscow. The Ukraine president, Volodymyr Zelenskiy, has released a desperate video plea calling on world leaders to attend a “peace summit” next month in Switzerland, after a deadly Russian attack on a DIY hypermarket in Kharkiv on Saturday killed 12 people and injured dozens more. “Please, show your leadership in advancing the peace – the real peace and not just a pause between the strikes,” said Zelenskiy in English. The mayor of Kharkiv, Ihor Terekhov, said about 120 people had been in the hardware store on Saturday afternoon. Zelenskiy on Sunday said it was further proof that Russia is not interested in peace.