[hef19898]

The both scenarios, the Russian sub during the Cuba Crisis and the Officer ignoring the early warning system, didn't involve clear orders from the legitimate chain of command to launch. The sub operated under the absence of orders, while the early warning system was a standard operating procedure, and the Officer in charge was involved in the systems development.

In any army of the world I would assume that, especially in the case of nuclear forces, orders to launch are not second guessed. After all, the whole concept of MAD depends on a swift counter attack. If those attack orders wouldn't be carried out fast, in the limited time frame available, something would be wrong.