There have been two revolutions in nuclear theology since the doctrine of Mutual Assured Destruction became dominant four decades ago. The first came in 1983. President Reagan proposed that defensive weapons take precedence over offensive weapons. The second happened last week. It came from George W. Bush and was almost universally misunderstood. Bush was said to have proposed the primacy of defensive weapons over offensive weapons. That is old news. In fact, he did something far more important: he proposed the end of arms control.
This seems strange to us. For more than a generation we have been living in...