21.   The threat of nuclear war has diminished.

22.   ...the threat of nuclear war and annihilation of the human race.

23.   Doubtless progress would have been slower and might even have stalled entirely without the stark reminder of the implications of nuclear war provided by the Cuban missile crisis.

24.   Er and here you have a case of diplomacy succeeding er and the spectre of war and possibly nuclear war erm fading out.

25.   Although the Cold War is over, some arms control analysts say that the threat of a nuclear war is actually greater now.

26.   Although nuclear war is still an important concern, the security threat has expanded to include crude nuclear devices, chemical and biological weapons and radiological devices.

27.   And although reinforcements arrived within hours, Powers said, he spent much of the next few days in a foxhole awaiting nuclear war.

28.   Another cult, the Central Jerusalem Church, has been bombarding journalists and diplomats with warnings about a nuclear war due to happen this winter.

29.   As he battles the plague sweeping through Europe, he is beset by visions of carnage and death -- visions involving tanks, machine guns and nuclear war.