IsraelWell before the Vela Incident, American intelligence agencies had made the assessment that Israel probably possessed its own nuclear weapons. In the 2008 book The Nuclear Express: A Political History of the Bomb and its Proliferation Thomas C. Reed and Danny B. Stillman stated their opinion that the "double flash" was the result of a joint South African-Israeli nuclear bomb test. David Albright stated in his article about the "double flash" event in the Bulletin of Atomic Scientists that "If the 1979 flash was caused by a test, most experts agree it was probably an Israeli test".
Countries with Nuclear Weapons Capability
* Acknowledged: Britain, China, France, India, Pakistan, Russia, United States, North Korea
* Unacknowledged: Israel
* Seeking: Iran
* 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.