"With the world focused on the nuclear crisis in Iran, it is tempting to think that addressing this case, North Korea, and the problem of nuclear terrorism is all that matters and is what matters most. Perhaps, but if states like Russia and Pakistan become more willing to use their nuclear weapons to achieve military advantage, and if nuclear weapons-related technology and materials continue to spread, the problem of proliferation will become much more unwieldy. In this case, U.S. security will be hostage not just to North Korea, Iran, or terrorists, but also to more nuclear proliferation, diplomatic miscalculations, and wars between a much larger number of possible players (including some of our closest allies) that could go nuclear. This, in a nutshell, is the premise of Underestimated: Our Not So Peaceful Nuclear Future, Second Edition, which explores what nuclear futures we may face over the next 3 decades and how we currently think about this future. Will nuclear weapons spread in the next 20 years to more nations than just North Korea and possibly Iran? How dire will the consequences be? What might help us avoid the worst? This book supplies the answers."
Army War College (U.S.). Strategic Studies Institute: https://ssi.armywarcollege.edu/