Where are the weaknesses in the Soviet system?

The government was easily corrupted

Explanation:

Due to the communism that the soviet government believed in, with no civilian insight to what their government was doing, corruption was rampant and almost nothing got done, thus causing great amounts of civilian casualties.  

either b) they were often feared and despised by other native cultures. or

c) their obsession allowed them to coexist with many other native cultures because of their peaceful nature.

during the ming dynasty