Book excerpt: These essays offer conceptual, historical, and analytical perspectives on one of the most significant challenges to global security in the twenty-first century: controlling nuclear proliferation. The spread of nuclear weapons is one of the most significant challenges to global security in the twenty-first century. Limiting the proliferation of nuclear weapons and materials may be the key to preventing a nuclear war or a catastrophic act of nuclear terrorism. Going Nuclear offers conceptual, historical, and analytical perspectives on current problems in controlling nuclear proliferation. It includes essays that examine why countries seek nuclear weapons as well as studies of the nuclear programs of India, Pakistan, and South Africa. The final section of the book offers recommendations for responding to the major contemporary proliferation challenges: keeping nuclear weapons and materials out of the hands of terrorists, ensuring that countries that renounce nuclear weapons never change their minds, and cracking down on networks that illicitly spread nuclear technologies. Nearly all the chapters in this book have been previously published in the journal International Security. It contains a new preface and one chapter commissioned specifically for the volume, Matthew Bunn's "Nuclear Terrorism: A Strategy for Prevention." Contributors Samina Ahmed, Chaim Braun, Matthew Bunn, Christopher F. Chyba, Matthew Fuhrmann, Sumit Ganguly, S. Paul Kapur, Ariel E. Levite, Peter Liberman, Austin Long, Sean M. Lynn-Jones, Alexander H. Montgomery, Gaukhar Mukhatzhanova, William C. Potter, Whitney Raas, Scott D. Sagan, Etel Solingen