And one has to remember China dosent have to worry about the Rompin Stompin Russian Red Ass anymore. Russian Army is a mockery to what the Soviet's were
Sorry buddy but what you say aint true,
Yes Russia's military power is reduced by far compared to their massive numbers during the cold war.
On the otherhand they have put in a great effort to give their military capabilities a more professional mindset also the numerous upgrades to their army start to pay off.
So in short said Russia might be not the big bully anymore as it was and i am sure that China has done its homework but take my word for it, if Russia wants to invade China they can do so and they have the better cards atm.
Sure if China keeps their buildup phase as it is they will become equal to Russia or perhaps even stronger but for now Russia does not have to fear China and vise versa.
In regards to China invading Vietnam i can say this China does have everything it needs to do this however due the geographic location of Vietnam and its massive resources and overall mindset its going to be hell for China.
Technological the Chinese are far superior but keep in mind if every tree is hiding a machine gun nest then a 2 cent bullet can be just as effective as all the tech that China can bring in.
In that regard China will do no better then the US did, the only benefit China has which the US did not have on such scale is the advantage to sit next door.
In regards to the Vietnamese forces they are outdated but they have a good history in terms of putting up fight.
Now i doubt that they have any ability to perform a mass invasion.
However i think it should be clear that the Vietnamese forces are a tough cookie given the fact that they have numbers and the right "mindset" helped by the fact that they can be the underdog.
At least i think so offensive i see little that the Vietnamese forces can do however defensive its a different story as the Vietnamese have proven in every war they ever fought.
And in regards to the Chinese and their Neighborhood i believe the Vietnamese can teach them a lesson or 2 in terms of defending.