An attacker's missile-borne countermeasures to ballistic missile defenses are known as penetration aids, or penaids. To support efforts to prevent the proliferation of penaid-related items, this research recommends controls on potential exports according to the structure of the international Missile Technology Control Regime.

This report presents the results of a conference of 38 national experts in nutrition and public health who met to develop performance standards that could guide restaurants toward facilitating healthier choices among consumers and that local communities or states could use as a model for developing and implementing either voluntary or mandatory certification programs.

This report examines the status and evolution of al Qa’ida and other Salafi-jihadist groups, and uses qualitative and quantitative data to assess whether this movement has strengthened. The author uses this analysis to examine U.S. strategic options to counter al Qa’ida and other terrorist groups based on the threat level and the capacity of local governments.

U.S. Air Force (USAF) global posture—its overseas forces, facilities, and arrangements with partner nations—faces a variety of fiscal, political, and military challenges. This report seeks to identify why the USAF needs a global posture, where it needs basing and access, the types of security partnerships that minimize peacetime access risk, and the amount of forward presence that the USAF requires.

Mounting costs, risks, and public misgivings of waging war are raising the importance of U.S. power to coerce (P2C). The best P2C options are financial sanctions, support for nonviolent political opposition to hostile regimes, and offensive cyber operations. The state against which coercion is most difficult and risky is China, which also happens to pose the strongest challenge to U.S. military options in a vital region.

Researchers examined past U.S. countering violent extremism and terrorism prevention efforts and explored policy options to strengthen terrorism prevention in the future. They found that current terrorism prevention capabilities are relatively limited and that there is a perceived need for federal efforts to help strengthen local capacity. However, any federal efforts will need to focus on building community trust to be successful.

A team of U.S. and international experts assesses the impact of various nations’ airpower efforts during the 2011 conflict in Libya, including NATO allies and non-NATO partners, and how their experiences offer guidance for future conflicts. In addition to the roles played by the United States, Britain and France, it examines the efforts of Italy, Canada, Belgium, Denmark, the Netherlands, Norway, Sweden, Qatar, the UAE, and the Libyan rebels.

As part of an evaluation of the Marine Corps Operational Stress Control and Readiness (OSCAR) program, this report describes the methods and findings of a large survey of marines who were preparing for a deployment to Iraq or Afghanistan in 2010 or 2011. The results are among the first to shed light on the pre-deployment mental health status of marines, as well as the social resources they draw on when coping with stress and their attitudes about seeking help for stress-related problems.

This report examines what could be done to convince North Korean elites that unification would be good for them. It describes five areas of concern that North Korean elites would likely have about the outcomes of unification and proposes policies that the Republic of Korea government could adopt that would give North Korean elites hope for an acceptable unification outcome.

In 2000, the MacArthur Foundation began the Window of Opportunity, a 20-year, $187 million philanthropic initiative intended to help preserve privately owned affordable rental housing. The authors of this report assess whether the initiative achieved its goals and identify lessons learned about effective preservation practices, as well as about the implementation of large-scale philanthropic initiatives generally.