New UK Foreign Secretary David Lammy said "we must hold those responsible for Putin's illegal war to account". UN chief António Guterres strongly condemned the strikes, his spokesperson Stephane Dujarric said, adding he found the attack on the children's hospital and another medical facility "particularly shocking". "Directing attacks against civilians and civilian objects is prohibited by international humanitarian law, and any such attacks are unacceptable and must end immediately," he said. The UN's human rights monitoring mission in Ukraine has said civilian casualties have been mounting in recent months, as Russia renewed its air campaign. A recent report said May was the deadliest month for civilian deaths in almost a year.
