International security refers to the measures and strategies that countries use to protect themselves from threats that cross national borders. This includes issues like terrorism, cybersecurity, and nuclear proliferation. Nations often work together through organizations like the United Nations to promote peace and stability, ensuring that conflicts do not escalate into larger wars. Another important aspect of international security is the cooperation between countries to address global challenges. This can involve sharing intelligence, conducting joint military exercises, or providing humanitarian aid during crises. By collaborating, nations aim to create a safer world where people can live without fear of violence or instability.