Many of the countries mentioned have good reason to sabre-rattle - like Ireland, who just want to show how strongly they stand behind the UK.
But only for Brexit purposes, because Ireland has major commercial links with Russia - who have a powerful mafia, based in posh Dublin 4.
For example, Shannon Airport could shut down without Russian support. All Russian aircraft refuel there (usually in the middle of the night) on the way to Cuba etc.
In Shannon also, the Russians have a large private area - with massive hangers - which has been the subject of great media scrutiny.
Very soon, Ireland will become very quite on this issue - like all relevant others...