The United States fought with a prestige. But North Vietnam won the war. The United States had to withdraw from Vietnam.

The United States army was killed more than 58000 people by this war. South Vietnam people was killed near 2 million people.

The feature of this war was it has not front line of war. The United States army feared, lost a military strength and declined a moral.

All of the world noticed this war.

by Tatsuya Hayashi

Sources

http://simple.wikipedia.org/wiki/Vietnam_War

2.The atom-bomb caused damege to Hiroshima and Nagasaki in 1945.

3.One of the most famous symbol is the Atomic Bomb Memorial Dome in Hiroshima.

4.It shows evidence of not only direct damage of city ,but also indirect damege of citizen.

5.The main indirect damage is an illness.

by Akio Takemura

（http://ja.wikipedia.org/wiki/%E5%8E%9F%E7%88%86%E3%83%89%E3%83%BC%E3%83%A0）

Atomic bomb was used to attack Japanese cities Nagasaki and Hiroshima.

Today, 7 countries have nuclear arms. USA, Russia, United Kingdom, France, China, India, and Pakistan.

And the risk of nuclear war increases as weapon are developed.

So, we should reduce the number of nuclear arms.

Sources:

http://en.wikipedia.org/wiki/List_of_states_with_nuclear_weapons

http://simple.wikipedia.org/wiki/Nuclear_weapon

by Shin Moriyasu

Atomic bomb is a fission type weapon, which was used to attack Japanese cities Nagasaki and Hiroshima. On the other, hydrogen bomb is a fusion type bomb.

Today, 7 countries have nuclear arms: USA, Russia, United Kingdom, France, China – these countries were WW II allies. India and Pakistan also have it. In addition, North Korea , Israel and Iran may have it.

Nuclear arms are very powerful and dangerous weapons. And the risk of nuclear war increases as weapon are developed.

So, we should reduce the number of nuclear arms.

by Shin Moriyasu