hum, let's see, NBC news has been one of the most biased pro-Clinton news media.
Now NBC news has a so-called "News" story 3 days before the election that Russia might manipulate votes all based on "un-named" sources and "secret" documents....
My money is on the Clinton campaign being behind the story. You have had a slew of "Russia is trying to elect Trump"/"Trump is a Russian stooge/spy" stories that have come out in the past week, all seem to come straight from the Clinton campaign.
Russia has a smaller GNP than italy, its military budget is 10% that of the USA, according to most experts its Army would struggle just to overrun Ukraine. Democrats are blowing it up as an existential threat just to gain a short term electoral advantage. A very short sighted view IMHO.