&gt;  <i>Germany was an ally of Russia until 45 minutes before the attack. Much of Russian paranoia comes from this.</i><p>Germany was an ally of RUssia, and learned from Soviets much of how to run an extermination camp, and Russian provided Germany with space to practice armor warfare.<p>However, there is considerable debate speculating that Germany&#x27;s initial success in Barbarossa was simply because the Soviet army was planning to attack Germany on July 6, and therefore its formation was totally arranged for offense, and failed miserably when attacked.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Soviet_offensive_plans_controversy" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Soviet_offensive_plans_controv...</a><p>Anyway, the Russian paranoia didn&#x27;t really need a German betrayal to develop. The Russian military had been internally wiped out in the paranoid purges of 1930&#x27;s.