Ukrainian President Volodymyr Zelensky rejected Russia’s claims that there had been an air defence error causing a deadly strike on a children’s hospital in Kiev that caused extensive destruction on Monday, ahead of a NATO summit. “What cynicism the bastards in the Kremlin have shown, that it was allegedly Ukrainian air defence and not a targeted missile strike,” Zelensky told a press conference with Polish Prime Minister Donald Tusk in Warsaw. Zelensky thanked all those who have posted videos online “on which it can be seen concretely that it is not just a part of one or another missile, but …