dozens of times more of them, the morale of the enemy is constantly dragt. deteriorating. >> repo >> now to the south the fall of kherson marked in red on the map. fierce fighting has left dozens of people dead. in ukraine's second largest city kharkiv, russian strikes hit at least three schools and a cathedral this week. no word on casualties there yet. and on the diplomatic front, a new round of talks between russia and ukraine could get under way in the coming hours. expectations, though, of a breakthrough and surprisingly are low. meanwhile, cnn's jim sciutto takes a look at the battle rage ogg tonight ground as russian troops try to take key ukrainian cities. >> reporter: russia's invasion of ukrainian is gradually gaining ground. the mayor of the city of kherson in the south of the country with