While I agree intel and physics are apples to oranges, the soviets had a pretty good intelligence arm and quite capable  analytics. The soviets where very good at Human Intelligence:<p><a href="http:&#x2F;&#x2F;sputniknews.com&#x2F;military&#x2F;20150928&#x2F;1027670037&#x2F;kgb-cia-agents-outing.html" rel="nofollow">http:&#x2F;&#x2F;sputniknews.com&#x2F;military&#x2F;20150928&#x2F;1027670037&#x2F;kgb-cia-...</a>