Defense and security refer to the measures and strategies employed by nations to protect their citizens, territory, and interests from threats. This includes military forces, intelligence agencies, and cybersecurity efforts aimed at preventing attacks and ensuring safety. Additionally, defense and security encompass international cooperation, such as treaties and alliances like NATO, which help countries work together to address common threats. Effective defense strategies also involve emergency preparedness and response plans to manage crises, ensuring that communities can recover quickly from disasters or conflicts.