Although the global community has achieved some success in endeavors such as eradicating smallpox, efforts to coordinate nations' actions in others—such as the reduction of drug trafficking—have not been sufficient. Identifying the factors that promote, or inhibit, successful collective action for an ever-growing set of challenges associated with globalization, Todd Sandler applies them to promoting global health, providing foreign assistance, controlling rogue nations, limiting transnational terrorism, and intervening in civil wars.