>> translator: how would the americans react if we placed domiciles on the border between canada and the united states or on the mexican border? not a single inch to the east, they told us in the '90s. and what do you know, they cheated. they just deceived us blatantly. five ways of nato expansion, and there you go, now in romania and poland, weapon systems appear. >> reporter: now that really speaks to some of the fears we've heard the russian president speak about these last few days, specifically the idea that should that eastward expansion of nato continue, and you heard there his deep distrust for anything nato or western leaders had to say on this issue, then they might be faced with the possibility of weapon systems in ukraine on the doorstep of russia. that clearly unacceptable to the russian leader. so an interesting insight into what he's been thinking even as he builds up his troops on the ukrainian border. >> nato's response has been that's up to nato and those countries, not to russia.