i'm mehdi hassan, the rachel maddow hosted by ali velshi in hungary, it's coming up in just a few minutes, with former ambassador to ukraine marie yovanovitch who was -- has her thoughts on the u.s. response to this conflict, and how president zelenskyy has risen to the moment to become a hero for the cause of democracy. that's ahead, but first the latest from ukraine where russian forces are increasingly striking civilian targets. as the invasion of ukraine enters its 15th day in the southern port of mario poll. a russian airstrike destroyed a children's hospital, a maternity ward, killing at least 18 people. the attacks have left people lacking their basic needs like food, water and, heat well relentless russian shelling has prevented civilians from safe