Russia doesn't want the conflict escalated at all. But there will be no direct attack on Russia by NATO. As all war games show what would happen to the NATO forces very quickly. The mid-level military officers (e.g. colonel) that know the most (much more than generals, etc.) would not want to start such a conflict - they may even refuse orders, as it can quickly escalate to tactical nukes and then strategic nukes which would result in the utter destruction of every major western city (including in the US) by Russian superior missile delivery systems.
The attack on Transniester can be a very dangerous provocation, as if a number of Russian peacekeepers get killed and injured, Russia may retaliate in a lightning attack to defuse future such attacks on its troops (as it did in South Ossetia when Georgia attacked in 2008). That would make the situation so dangerous that, again, the West would either have to back down or face a devastating defeat and/or utter nuclear destruction (of pretty much most of the planet). So, IF this is a preparation for such a dangerous provocation, most likely it would be for the propaganda and sanctions escalation rather than a hot shooting war between NATO and Russia - we all better hope, anyway.
The attack on Transniester can be a very dangerous provocation, as if a number of Russian peacekeepers get killed and injured, Russia may retaliate in a lightning attack to defuse future such attacks on its troops (as it did in South Ossetia when Georgia attacked in 2008). That would make the situation so dangerous that, again, the West would either have to back down or face a devastating defeat and/or utter nuclear destruction (of pretty much most of the planet). So, IF this is a preparation for such a dangerous provocation, most likely it would be for the propaganda and sanctions escalation rather than a hot shooting war between NATO and Russia - we all better hope, anyway.