>> you heard president biden's remarks. do you get the sense that he's saying, yes, we're going to do that? we will give us this. >> he seems to be leaning in a direction of we can do more. he was very careful talking about a major deviation from what there has been, and the white house knows the s-300 missile systems could help. >> it's a symbol because zelenskyy made it a symbol. >> u.s. intelligence officials also determined they think putin will see the planes as a step too far, and ukrainians look at that and say that's preposterous. >> we know what a plane is, and -- >> yeah, what does a missile system look like? >> drones, those are dangerous.