I'd highly recommend this book then. Goes into the history of nuclear weapons, proliferation, controls, launch authorization, scenarios, training, accidents, close-calls, embarrassments, etc.
It's from Daniel Ellsberg, the guy who leaked the Pentagon Papers back in the 70s.
I strongly encourage you to read Doomsday Machine by Daniel Ellsburg. If you think the president having this power is bad just wait till you read about all the other ways a nuke could go off.