The CTBT stands for the Comprehensive Nuclear Test Ban Treaty. It is a multi-governmental treaty the signatories of which agree to ban nuclear explosions in every environment whether for civilian or military objectives. The UN General Assembly adopted it on 10th September 1996. However, the treaty is yet to enter into force as 8 nations have not yet ratified it. Compliance with the CTBT is monitored by geophysical and other technologies including hydroacoustics, forensic seismology, radionuclide monitoring and infrasound. These technologies are employed to check the waters, the underground and the atmosphere for signs of nuclear explosion. Statistical methods and theories are vital to CTBT monitoring which give assurance in verification analysis. Once the treaty is enforced, wherever concerns about compliance crop up, onsite inspection will be conducted.