there is a reason russia does everything it does...one of the prime reasons is to intimidate their neighbors, but i don't think that is working that well anymore. we've all seen how effective the russian military WAS...now that most of it is dead, and most of their decent munitions are used up, they're not even the joke that they were at the start of the war...now it feels like i'm watching an old wolf get savaged by the new pack leader...and i like it a fucking lot.
however i suspect you're referring to this
https://www.businessinsider.com/russian-agents-went-to-ireland-to-inspect-undersea-cables-report-2020-2
i almost hope russia does try it...it will be the provocation required to finally smash putin flat, like the cockroach he is, and put russia back in it's place, inside it's own borders, permanently.