The Germans did not receive nuclear weapons ,because US did not trust them .
The Soviets used former nazis for the Stasi,because they were short on capable candidates and because the nazis became enthusiastically communists .
Besides, NATO used also Gehlen, who during the war said : Heil mein Führer and after the war : long live democracy .
The Bundeswehr had ( and still has ) no chief of staff but only an inspector general with limited power, because no one trusted Heusinger ,his henchmen and his successors .Speidel betrayed Rommel to not be implicated in the conspiracy of the 20th July .
The Soviets did not trust,rightfully, the armies of the satellites,especially not the Volksarmee ;when the Soviets left the satellites, the communist system collapsed and the gauleiters disavowed Marx .
In 1956 the Polish army, the Polish communists and the Polish Cheka said no to the Kremlin, in 1968 Ceausescu refused to participate into the suppression of the Czech Spring,the Czech army accepted the liberalisation in CZ, the Hungarian army the liberalisation in Hungary .And let's not talk about Yugoslavia.
The Soviets knew that in a crisis they had only one ally : themselves .