An excellent programme, well researched and in considerable depth. The two clear messages resonating from the programme were the fact that the Soviets didn't do analysis and believed all the intelligence that they gathered , and that critical events can hang on the interpretation of a fairly low-level operator on the night shift - the Soviet missile warning cell which picked up spurious satellite reports of launches based on IR reflected from high-level clouds.
There is an excellent book "The Secret State: Whitehall and the Cold War" by Peter Hennessey which is well worth a read. In a similar vein to the above, the story is recounted of the SIS officer handling the Soviet spy Penkovsky, who received a telephone call with the signal indicating an imminent strike. Unknown to the officer, Penkovsky had been arrested (1962) and the call was a spoof. As it didn't feel right, the officer didn't pass on the call...who knows what might have happened if he had!