Articles

The extraordinary complexity of today’s advanced weapons systems has significantly reduced the ability of states to imitate other states’ military technology. Consequently, U.S. rivals such as China will continue to struggle to develop indigenous capabilities that can match those of the United States.

All the world's nuclear-armed states (except for North Korea) have begun modernizing and upgrading their arsenals, leading many observers to predict that the world is entering a new nuclear arms race. While that outcome is not yet inevitable, it is likely, and if it happens, the new nuclear arms race will be different and more dangerous than the one we remember. More nuclear-armed countries in total, and three competing great powers rather than two, will make the competition more complex. Meanwhile, new non-nuclear weapon technologies — such as ballistic missile defense, anti-satellite weapons, and precision-strike missile technology — will make nuclear deterrence relationships that were once somewhat stable less so.

Current gross indicators such as population and GDP are misleading in terms of a country’s relative power. Power can be calculated more accurately by subtracting a country’s liabilities from its assets.

As the window of opportunity to avert dangerous climate change closes, the authors argue that we urgently need to take stock of government initiatives that accelerate innovation in energy technologies to reduce greenhouse-gas emissions. What works and why?

"For nearly a century, in short, offshore balancing prevented the emergence of dangerous regional hegemons and pre­served a global balance of power that enhanced American security. Tellingly, when U.S. policymakers deviated from that strategy—as they did in Vietnam, where the United States had no vital interests—the result was a costly failure."

In order to make R&D funding decisions to meet particular goals, such as mitigating climate change or improving energy security, or to estimate the social returns to R&D, policy makers need to combine the information provided in this study on cost reduction potentials with an analysis of the macroeconomic implications of these technological changes. The authors conclude with recommendations for future directions on energy expert elicitations.