誰が核兵器を持っているのか、そしてどうやって手に入れたのか？ - BBCワールドサービス

It’s 80 years since the United States dropped atomic bombs on Japan. At the time, the US was the only country with nuclear capability, but now nine countries have nuclear weapons

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Here we explore how those countries developed their arsenals and why others are being stopped.

00:00 First nuclear detonation

00:39 Which countries have nuclear weapons?

01:15 Types of nuclear bombs: fission and fusion

01:55 Eisenhower’s Atoms for Peace plan

02:45 Who are the original five nuclear states?

03:06 What is the Non-Proliferation Treaty, NPT?

04:22 Which countries have not signed the NPT?

04:52 Israel’s nuclear weapons

07:29 India and Pakistan’s nuclear weapons

09:32 North Korea’s nuclear weapons

11:03 Iran’s nuclear programme

13:10 The legacy of the Non-Proliferation Treaty

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