r. meagan fitzgerald is in kyiv >> reporter: ukraine saying its swift and fast-moving counterattack is taking back even more russian-held territory. ukraine releasing this video showing its soldiers sweeping through a force after rushing this russian military vehicle. ukraine says they've captured hundreds of russian soldiers during their sweep past the front line ukraine's president zelenskyy says his troops have reclaimed more than 2300 square miles of territory, including the south and the northeast, liberating some 150,000 ukrainians. a top ukrainian lawmaker telling us this is just a sign of things to come. >> this is a turning point, a no return point, because russian army is demotivated. this is point number one point number two, russian people are starting finally asking questions. >> reporter: in recently liberated towns, there is relief, but there is also anger. this ukrainian man destroying the russian flag and as villages are taken back, just like we saw in bucha on the outskirts of kyiv, allegations of horrific war crimes are surfacing again, this time on the outskirts of kharkiv