I haven't seen the film, so I don't know what the accents sounded like. But I have heard a Russian emigrant to America speak, and she had a very heavy accent - Ayn Rand.

As for the good Russians being pro-USA, that is just the natural way of things. :) Used to be, anyhow. Now we're going to hell in a handbasket, and *I* don't like the USA as presently constituted.