The modern concept of a nation state is not possible without a strong foundation of internal security. The dimensions of internal security include armed rebellions, economic security, environmental security, and cyber security. We look at the formulation of concerns of internal security at an international level, especially of the United States of America, the United Kingdom and France. Though internal security is conceptualized differently in various jurisdictions, the common thread remains adherence to the rule of law and securing peace and security of its citizens ensured through deft handling of internal and external destabilizing elements.