Which is why they have been working to undermine western democracy.
A lot of the "muh Russia" narrative disappeares quite quickly when its pointed out that Corbyn was a regular guest on RT.
His press secretary and close ally Seumas Milne is a friend/sycophant of Putin, and before that the USSR (especialy the Stalinist periods of the USSR).
Corbyn's whole career has been about praising Russia, and before that the USSR. Whether it was the Warsaw Pact, Crimea, or the Ukraine, as far as Corbyn is concerned, it was a justified Soviet/Russian defensive measure, to NATO aggression - check his articles for the Morning Star.
Although I think JC and Milne are more useful idiots, Trump, Farage, and you know who else - Hilary Clinton - are in that sleazy - seems corrupt but hard to outright prove corrupt mould that is attracted to sleazy money - of which Putin's got plenty (there are tons of links between the Clintons and Putin too, but the press doesn't go there nearly as much).
Its been happening for years, its just that with Brexit and Trump everyone needs an easy excuse rather than do some introspection.