No that's pure warmongering and IMO plain nonsense.
Just go to official site of the Russian President - kremlin.ru and read their doctrine.
Google translation of the definitions:
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d) military conflict is a form of resolving interstate or intra–state contradictions with the use of military force (the concept covers all types of armed confrontation, including large-scale, regional, local wars and armed conflicts);
e) armed conflict – an armed conflict of limited scale between States (international armed conflict) or opposing parties within the territory of one State (internal armed conflict);
f) local war – a war between two or more States pursuing limited military and political goals, in which military operations are conducted within the borders of the opposing States and which primarily affects the interests of only these States (territorial, economic, political and others);
g) regional war – a war involving two or more States of the same region, waged by national or coalition armed forces using both conventional and nuclear weapons in the territory of the region with adjacent waters and in the airspace (outer space) above it, during which the parties will pursue important military and political objectives. goals;
h) a large–scale war is a war between coalitions of states or the largest states of the world community, in which the parties will pursue radical military and political goals. A large-scale war can result from an escalation of an armed conflict, a local or regional war involving a significant number of States from different regions of the world. It will require the mobilization of all available material resources and spiritual forces of the participating States
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You make think, that it is warmongering and nonsense. But the Russians are insane warmongers (especially from the western point of view)
Russia certainly has "historic ambitions" towards e.g. Latvia - therefore IF Russia should attack Latvia - it is a regional conflict, that however involves ALL NATO member States (just as Ukraine) - therefore NATO participating in a regional conflict.
Since NATO is far superior to Russia - they do not need to involve nukes to trash Russian forces - and therefore they never will.
Russia won't be using nukes either - since they are fully aware of Europe's own nuke potential and that of the USA.
Europe won't have any significant nuclear potential after the Russian counter-force attack.
Furthermore, there is no Russian army that could attack simultaneously all Baltic States, plus e.g. Finland and Poland - to get into an all out war with NATO. Since two years Russia isn't even able to advance into Ukraine - but Ukraine managed to regain 50% of what Russian forces had initially overrun in the first 3 weeks. - The Russian Armed Forces are what they are - a joke. Just barely able to wrestle down tiny Georgia in 3-6 month.
The big "unknown" factor is Ukraine - IMO they will not be taken into NATO - thus a "neutral" Ukraine will get nukes on their own. And that is Putin's actual fear.
It's not just Putin's fear. If there is a choice:
1) fight a nuclear war now (and attack the USA first).
2) allow Ukraine possess nukes and allow them to attack Russia first,
any Russian decision-maker will definitely choose the first.