No I was in USAF and know the difference between 1941 and 2014. There would be no secret build up of forces today, no surprises. Hell in 1941 most of the Soviet supply chain, and much of the German one, was still pulled by horses. Attacking with a modern combined arms force is a very intricate operation today, as is keeping it supplied.
Theres plenty of evidence of how difficult it is with the examples of Gulf 1 and Iraq 2. The Russians and Chinese just dont have that capability to project power like that. And they sure as hell cant do it in secret.
Of all the dumb things your saying the comparisons your trying to make between today, WW2, and maybe the Romans leave me dumbfounded. You just dont pick up and say "everyone run south for 1,000 miles" and expect it to work.
Even we had clusterfracks supplying attacking troops in Iraq-2. An attack that wasnt secret to anybody. Lol how in hell would the Russians or Chinese even get to the middle east? Neither have much amphib capability, neither have an Air Force able to support the operation, and neither have the navy able to protect it. The Soviets messed up an operation on their border and the current Russian force, comparatively, is a shadow of the Soviet one of Dec. 1979.
You can drive a car, on the road, from the North Cape in northern Norway all the way to Vietnam if you want (and if you can get all the visas...)
In 2004 Ewan McGregor and Charlie Boorman drove this route on motorcycles.
WTF does that have to do with moving modern armies?