Western leaders and diplomats expressed outrage after Russian missiles destroyed a children’s hospital in Kyiv, amid a rare daytime attack on Ukrainian cities which killed at least 20 on Monday. Russia fired dozens of missiles at cities across Ukraine in a massive barrage that killed at least 31 people and smashed into Okhmatdyt children’s hospital in Kyiv, trapping victims under the rubble, UN officials said. Municipal officials said earlier that at least seven people had been killed in the strikes on Kyiv. Britain’s Foreign Minister David Lammy condemned the hospital strike as “an appalling …