Russia is big and flat. There’s nothing major geographically from stopping armor from rolling into Moscow, if that’s what you want to do.
However, it doesn’t have to happen. Seems like the Press and Politicians really want a war with Russia.
"Bitch, Bitte!"
“Russia is big and flat. There’s nothing major geographically from stopping armor from rolling into Moscow, “
That’s why Russia won’t tolerate NATO on their current border. And why the new Russian border will either be the Dnieper or the old border of Galicia.