On 4 November 2008, Mozambique ratified the Comprehensive Nuclear Test Ban Treaty (CTBT) which bans all nuclear explosions on Earth, the CTBT Organization announced in a news release.
The Treaty has now been ratified by 146 nations, and signed by 180.
“To enter into force, however, the Treaty must be signed and ratified by the 44 States listed in Annex 2 to the Treaty,” the CTBT Organization explained. “These States participated in the negotiations of the Treaty in 1996 and possessed nuclear power or research reactors at the time. Thirty-five of these States have ratified the Treaty, including … France, Russian Federation and the United Kingdom. The nine remaining States are China, Democratic People’s Republic of Korea, Egypt, India, Indonesia, Iran, Israel, Pakistan and the United States.”
Background on the Treaty from the Congressional Research Service is available here (pdf).