If there's a world-wide all-out nuclear war it's said that there will be a "nuclear winter" all over the planet for several months.

The question is how to avoid nuclear war.

Civilization is now threatened by nuclear war.

They are afraid that nuclear war will break out.

Nuclear war will bring life on this planet to an end.

A nuclear war will bring about the destruction of mankind.

Who can survive after a nuclear war?

Few people, if any, could survive a nuclear war.

All humanity will suffer if a nuclear war breaks out.

What will become of our offspring if a nuclear war breaks out?

We have to avoid the nuclear war by all means.

If a nuclear war were to break out, mankind would perish.

The Cuban Missile Crisis brought the world to the brink of nuclear war.