Why didn't the USSR want Germany reunited?

Answer 1

Because they saw Germany as a threat to not only Soviet interests in the region of Eastern Europe, but also to the Union itself. West Germany was the strongest economic partner in the EU prior to reunification, with unification, not only does the USSR loses a puppet state an a buffer between Germany, it gives Germany access to land closer to the USSR and also to a pool of workers in the East, and a much more powerful Germany once united. This challenged the balance of power on which the european powers had played on for centuries. the unification would also mean that the Soviets could not prevent it from happening, which in turn would lead to other satellite governments overthrowing soviet rule.