doorsteps. >> when you sleep at 2:0 0 a.m., the sounds turn on and it's scary. it's scary now because you understand that now in lviv, it's like calm, it's peaceful situation but we don't know if it will be tomorrow. >> but the city remains resilient. take this powerful photo of empty strollers in front of a lviv city hall. there is 109 of them. one for every child killed since the start of the war according to the ukrainian government and president zelenskyy is making an appeal to russian mothers killing 13,000 russian soldiers died in the war and telling them to check on their sons and love their children more than they're afraid of their government. this as putin continues to shamelessly target civilians shelling residential buildings and a kindergarten in kyiv. richard engel was at the site of that attack this morning. >> reporter: the bomb landed right in the middle of this