we've heard a lot of shelling and come closer. the feeling is they're heading this way. they want to take this capital. and they expect to try to move it soon, shelling it soon. shannon? >> thank you for the around-the-clock coverage there. get some rest if you can. >> thank you. >> the united nations said more than 1.7 million people have fled ukraine since the russian invasion began and the city of lyviv has become a hub for refugees. >> we heard explosions from the other side of the reservoir. the air alarm was on all the time. >> the attacked the nuclear power plant, this family was four miles away and escaped at the first opportunity. >> they want our territory, because putin believes that it is historically russian territory and we should be in one state and ukraine is a free