War, nuclear weapons, and terrorism are all major threats to US security, but a new set of emerging threats are challenging the current threat response apparatus and our ability to come up with creative and effective solutions. This book considers new, 'non-traditional' security issues such as: transnational organized crime, immigration and border security, cybersecurity, countering violent extremism and terrorism, environmental and energy security, as well as the rise of external actors. The work examines the major challenges and trends in security and explores the policy responses of the U.S. government. By using international relations theory as an analytical approach, Fonseca and Rosen present how these security threats have evolved over time. 

Brian Fonseca is Director of The Gordon Institute and Adjunct Professor at the Latin American and Caribbean Center and the Department of Politics and International Relations, Florida International University, USA.Jonathan D. Rosen is Research Scientist at The Gordon Institute, Florida International University, USA.

1. Introduction .- 2. Countering Transnational Organized Crime .- 3. Immigration and Border Security .- 4. Cybersecurity in the US: Major Trends and Challenges .- 5. Countering Violent Extremism and Terrorism .- 6. Environmental and Energy Security .- 7. The Rise of External Actors: Paper Tigers or Security Threats? .- 8. Analytic Conclusions.