Which organization established in 1945 aims to maintain international peace and security?

• A. UN (United Nations)
• B. NATO
• C. World Bank
• D. WHO

Answer: (A)

After World War II, nations created a global body to prevent future conflicts and coordinate peace efforts. The United Nations was established in 1945 with the explicit aim of maintaining international peace and security, resolving disputes through diplomacy and, when necessary, peacekeeping action. Its charter centers on preventing war, protecting human rights, and assisting with humanitarian needs, making it the best fit for this purpose.

NATO, founded in 1949, is a military alliance focused on collective defense among member countries. The World Bank centers on financing development and reducing poverty, not on maintaining peace and security. The World Health Organization concentrates on global health issues. Each of these plays an important role, but they do not match the specific goal described in the prompt as directly as the United Nations does.