west and northwest towards the city. and the northeast. what the ukrainians have an advantage in, though, terrain. there are hilly areas right here and behind kyiv to the northwest. and what the ukrainians can do is they can come around this way, for example, or this way and try to cut off russian forces inching toward kyiv but don't have the strength to move forward. any type of stationary russian force is basic live fair game for the ukrainians if they attack quickly and are able to sustain the kind of fighting they need to in order to beat them back. >> okay. colonel cedric leighton, thank you for walking us through all that. >> you bet, alisyn. absolutely. so ukraine's president invoking the post holocaust vow of never again. as he pleads german lawmakers for more help, he calls those words worthless.