Nuclear proliferation is the spread of nuclear weapons, fissionable material, and weapons-applicable nuclear technology and information to nations not recognized as "Nuclear Weapon States" by the Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as the Non-Proliferation Treaty or NPT. Proliferation has been opposed by many nations with and without nuclear weapons, as governments f
![Nuclear proliferation - Wikipedia](https://cdn-ak-scissors.b.st-hatena.com/image/square/307a0fc8ec0bffc1bf629b02e767d309a52db83f/height=288;version=1;width=512/https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fthumb%2F6%2F6a%2FLittle_boy.jpg%2F1200px-Little_boy.jpg)