The world will be destroyed by a nuclear war

This Japanese cult (Aum Shinrikyo) predicted the world would be destroyed by a nuclear war between October 30 and November 29, 2003.
Aum Shinrikyo (currently known as Aleph) is a Japanese cult, listed as a terrorist organization by several countries. The group was founded by Shoko Asahara in 1984. The group gained international notoriety in 1995, when it carried out the Sarin gas attack on the Tokyo subway.

William M. Alnor, UFO Cults and the New Millennium. Baker Books, Grand Rapids MI, 1998.