Not discounting the Russian moves, we find this headline hard to believe.

In our view, NATO is on life support and Trump on verge on pulling plug on US support. Ukraine war settling out may include moves in that direction so these saber rattling headlines out of UK resonate more with British fear of contagion than stark reality for fear of US safety threat.

https://www.dailymail.co.uk/news/article-15226075/Putin-amassing-nuclear-weapons-attack-submarines-Arctic-Circle-Russia-prepares-war-Nato-Norway-says.html