kaitlan collins, the white house still isn t giving ukraine what they need most. reporter: president biden responding directly to president zele zelenskyy s request for his besieged nation. that brings the total assistance to ukraine $1 billion just this week. reporter: biden announcing the u.s. will send hundreds of millions in new military aid to help fend off the russian invasion. it includes 800 antiaircraft systems, and at the request of volodymyr zelenskyy we are helping identify and providing longer systems. reporter: he stopped short of responding to extendky s request for a no-fly zone. he ll send equipment in instead. in commending zelenskyy for his courage in the face of brutal russian aggression. putin is inflicting appalling