in mariupol. officials now say 300 people seeking shelter there were killed. we do have it all covered tonight, beginning with this new message from russia. what they now claim their military goal has been all along. martha raddatz with her sources. can the russians be believed on this? abc s james longman leading us off from inside ukraine tonight. reporter: tonight, russia now signaling a major change in ukraine after facing significant setbacks, now appearing to be reframing its mission. the russian defense ministry seeming to significantly scale back its objectives, saying the main goal of the invasion now is to take control of the eastern donbas regionin ukraine. the ukrainians saying they put russian forces on the defensive around the capital. and for the first time, the u.s. says the russians no longer have full control of kherson, a city they had taken over. ukrainians now launching counterattacks nearby. a senior u.s. defense official saying russia may have lost up