>> reporter: yeah, they are getting worn down, john, and, you know, still ukrainian forces are fighting street to street there, but there's been a stark message this morning from kremlin forces in and around that city to ukrainian troops, basically saying leave, surrender or face death or die. that's the message coming from these rebel groups backed by russia as well as the russian military of course as russia continues to make slow but definite progress in that key city. there's no end in sight to this war, but it's horror is plain to see. an old woman crosses herself in prayer as troops figh...