I am not supposed to be worried about nuclear war with Russia. With North Korea maybe. I am told Kim Jong Un isn’t rational and can’t be trusted, in spite of all evidence to the contrary. Or perhaps China. It’s ten feet tall, after all. Never mind that our nuclear arsenal vastly exceeds theirs. But Russia? Nah. Mutually assured destruction, baby. We both have enough nuclear warheads to destroy each other (and the world)...