CTBT is a multilateral treaty that bans all nuclear explosions, for both civilian and military purposes, in all environments.
- It was adopted by the United Nations General Assembly on 10 September 1996 but has not entered into force as eight specific states have not ratified the treaty.
- 166 states have ratified the CTBT and another 17 states have signed but not ratified it.
- China, Egypt, Iran, Israel and the United States have signed but not ratified the Treaty.
- India, North Korea and Pakistan have not signed it.
- According to CTBT each State Party undertakes not to carry out any nuclear weapon test explosion or any other nuclear explosion, and to prohibit and prevent any such nuclear explosion at any place under its jurisdiction or control.
- The Preparatory Commission for the Comprehensive Test Ban Treaty Organization (CTBTO), an international organization headquartered in Vienna, Austria, was created.
- It is built for the verification regime, including establishment and provisional operation of the network of monitoring stations, the creation of an international data centre, and development of the On Site Inspection capability.
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