Can Russia Invade Europe

https://www.thesun.co.uk/news/5177666/russia-military-drills-invasion-europe-vladimir-putin/
https://www.washingtonexaminer.com/russia-might-be-about-to-invade-europe-heres-how-america-should-respond
https://www.bbc.com/news/world-europe-40428132
https://en.wikipedia.org/wiki/S-400_missile_system
https://www.globalfirepower.com/armor-tanks-total.asp