Who has nuclear weapons and how did they get them? - BBC World Service

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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