They’re not a threat to us since they don’t have a death wish.
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Maybe not (and there is some evidence to support this) but they do have an understandable obsession with security around their borders. They have twice been invaded with catastrophic results to their homeland. You don’t provoke people who are extremely territorial.
I also wouldn’t refer to them as a wannabee. Their submarine force was formidable, and still is. And they have space based capabilities as well. They are a threat we need to take seriously. Russia is not Iran.
When you have leadership that is perceived as being weak and confused (by adversaries and “allies” alike) it invites aggression. That’s where we are now. Russia, China and others will not let this window of opportunity pass by without exploiting it. In fact, they would be stupid if they did.
The Russians have always been paranoid about security; As for their submarine fleet,while it may be of some concern it does not come close to being a deterrent of our constantly on patrol fleet of ballistic missile submarines. In fact there is no nation which has any deterrent at all for these submarines since their exact location is not even known to the Pentagon and the fire power they carry is enough for any one of the subs to destroy the fighting ability of any country on earth.
The only threat of a nuclear attack comes from the Muslim infested countries and for that reason it makes sense for China, Russia and us to team up and take out every trouble making Islamic freak on the planet.