• (Bruce) Blair has insisted (in e-mail to me, and in our interview) that the whole “could the Secretary of Defense refuse an order” question was a red herring. The Secretary of Defense, he insisted, was completely dispensable with regards to the deployment of nuclear weapons. As I noted in my Post piece, there are several descriptions of the nuclear chain of command that imply that the Secretary of Defense is necessary, as the “conduit” (my term) between the political and military worlds. But is it true? Blair emphatically said no…


DOD Directive 5100.30 states:

The NCA [National Command Authorities] consists only of the President and the Secretary of Defense or their duly deputized alternates or successors. The chain of command runs from the President to the Secretary of Defense and through the Joint Chiefs of Staff to the Commanders of the Unified and Specified Commands. The channel of communication for execution of the Single Integrated Operational Plan (SIOP) and other time-sensitive operations shall be from the NCA through the Chairman of the Joint Chiefs of Staff, representing the Joint Chiefs of Staff, to the executing commanders.


  • Which seems to set up the Secretary of Defense as an essential part of the chain. The directive in question is not especially recent (the unclassified version of the directive  dates from 1974), and it doesn’t clarify exactly how important the Secretary of Defense might be.


  • But over the last few weeks… and my own further digging into the matter, I have become convinced that the weight of the open evidence points to the idea that Blair is correct — the Secretary of Defense is not just unnecessary, but not even in the nuclear chain of command.