ukraine's navy says a large russian ship now destroyed. the video shows a huge fire, that's a russian ship on fire ukrainians say. this will be a huge disruption of the russian efforts. also overnight, ukrainian forces pushing the russians back on the front line east of kyiv. they say the ukrainians have gained. i'm joined here in lviv by cnn's phil black. >> indeed, john. if this is due to the ukrain ukrainians, and we understand this happened early this