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.