The 21st century presents a new approach to security threats. Today scholars and politicians alike have been debating non-traditional security (NTS) threats, which are also known as nonmilitary threats, to better understand world politics and take the necessary measures to sustain and promote the international order. Among the critical NTS are environmental security, economic security, the security of food and water resources. Other NTS include migration, climate change, diseases and pandemics, social issues, human trafficking and drugs. Therefore, the correct option is E.