The proliferation of Weapons of Mass Destruction (WMD) is a major concern and the Middle East is at the forefront of US-lead efforts to counter and control their spread. This vital book examines why states seek to gain WMD, a crucial issue in developing strategies against proliferation. Leading experts examine specific countries and the interplay among political, economic, cultural and regional factors driving decisions whether to acquire WMD. The result is enhanced understanding of the challenge proliferation poses to U.S. strategy and policy and the wider international community.