Countries with Nuclear Weapons Capability Acknowledged: Britain, China, France, India, Pakistan, Russia, United States, North Korea1 Unacknowledged: Israel Seeking: Iran2 Abandoned: South Africa—Constructed but then voluntarily dismantled six uranium bombs. Belarus, Kazakhstan, Ukraine—When Soviet Union broke up, these former states possessed nuclear warheads that they have since given up. 1. North Korea tested its first nuclear device on October 9, 2006. 2. In Aug. 2005, U.S. intelligence estimated that Iran would possess nuclear weapons in the next decade. In Jan. 2006, Iran announced its decision to restart nuclear research. Source: U.S. State Department, TIME magazine and the Nuclear Threat Initiative.
The nations that have nuclear weapons are known to be the United States, Russia, China, France, and United Kingdom. Iran began a nuclear weapons program and faced world sanctions because of it.
Israel, India, and Pakistan have also built nuclear weapons, but have no active nuclear war heads. Iran, Syria, and North Korea have violated international laws regarding stockpile and building of nuclear weapons.