Foreword /Mitchell B. Reiss -- Introduction : nonproliferation at a crossroads / Nathan E. Busch and Daniel H. Joyner -- Dealing with proliferation and terrorism involving WMD / Joseph F. Pilat -- WMD terrorism / Charles D. Ferguson -- The future of the NPT / John Simpson -- Chemical and biological weapons / Julian Perry Robinson -- WMD inspection and verification regimes : poitical and technical challenges / John Hart and Vitaly Fedchenko -- Trade controls and international security / Scott A. Jones, Michael D. Beck, and Seema Gahlaut -- The proliferation security initiative / James R. Holmes and Andrew C. Winner -- Force, preemption, and WMD proliferation / M. Elaine Bunn -- International legal responses to WMD proliferation / Daniel H. Joyner -- The role of the European Union in WMD nonproliferation / Ian Anthony -- South Asia and the nonproliferation regime / Seema Gahlaut -- China's changing approach to nonproliferation / Bates Gill -- North Korea's nuclear weapons program to 2015 : three scenarios / Jonathan D. Pollack -- The Iranian nuclear program / Sharon Squassoni -- U.S.-Russia cooperative nonproliferation / Elizabeth Turpen and Brian Finlay -- Russia's nuclear security culture / Nathan E. Busch and James R. Holmes.