Tonight, vladimir putin is positioning his troops for that eastern assault. satellite images show his forces on the move armored vehicles and support equipment ready to attack. putin says he wants to combat the nato threat. but tonight, that strategic goal unraveling. finland and sweden, traditionally neutral, are now moving closer to membership in the alliance. this comes after president biden, for the first time, called russia s war in ukraine genocide. yes, i called it genocide. putin is just trying to wipe out the idea of even being able to be a ukrainian. and the evidence is mounting. reporter: the discovery of five bodies in a bucha basement, their hands bound, apparently tortured and executed, alerted the world to possible war crimes here. tonight, the mother of one of those men speaking out. they came like a hurricane, causing so much pain. for what?