 The BBC's Tom Bateman, who's in Washington, DC. One of the reasons Ukraine is so concerned about its air defences is to prevent the kind of attacks that occurred on Monday when 43 people were killed in missile attacks nationwide, including two in a paediatric hospital in Kiev. NewsHour's Julian Warwick has been speaking to Victoria Kolpakova, whose 12-year-old son was preparing for a stem cell transplant in the hospital in Kiev when the missiles struck.