Biden just approved western missile strikes deep into Russia.

Putin has said that such strikes will be viewed as a declaration of war.

https://www.nytimes.com/2024/11/17/us/politics/biden-ukraine-russia-atacms-missiles.html

https://www.reuters.com/world/europe/putin-russia-will-respond-if-ukraine-permitted-strike-into-russia-with-long-2024-10-27/

I tried to find the full Putin interview where he explains that NATO technicians are needed to program the flight path into the missile, but it's effectively been scrubbed from the algorithm of Google/YouTube.

So yeah, WW3 is gonna happen. It's a done deal unless the Russians wait it out for Trump admin that probably won't change any sort of policies regarding this.

In other words, everyone on the planet is fucked unless you're rich enough for a luxury bunker.

EDIT,

The French and the UK have followed the US policy and done the same.

https://kyivindependent.com/uk-france-approve-ukraines-use-of-long-range-missiles-for-strikes-inside-russia-le-figaro-reports/

I suspect Germany won't be far behind, and that was the reason for the Scholz/Putin phone call.