Do alliances curb states from developing nuclear weapons? If so, what kind of alliances work best and how do they function? This book looks at what makes alliances credible enough to prevent nuclear proliferation, how alliances can breakdown and encourage nuclear proliferation, and whether security guarantors like the United States can use their alliance ties to end the nuclear efforts of their allies. The author finds that military alliances are, surprisingly, less useful for preventing allies from acquiring nuclear weapons
that it is easier to prevent an ally from initiating a nuclear program than to stop an ally that has already started one
and that economic or technological reliance works better to reverse or to halt an ally's nuclear bid than other factors. This book uses intensive case studies on West Germany, Japan, and South Korea, as well as a series of smaller cases on Great Britain, France, Norway, Australia, and Taiwan, to examine this critical issue.