system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is the nuclear proliferation treaty and why do India, Pakistan and a few others refuse to sign it?
gpt
The nuclear non-proliferation treaty says two important things:

1. All countries have a right to research and develop nuclear technology for peaceful purposes, and the more-developed countries should help them.

2. The goal for the entire world is global nuclear disarmament, the permanent abolition of nuclear weapons. Until then only China, Russia, the US, the UK, and France may possess nuclear weapons and they must make gradual efforts toward dismantling their arsenals. 

India thinks this is unfair, because China has them, and China acts fairly aggressively towards India sometimes, meaning India wants nuclear weapons to defend themselves. Pakistan also has disputes with India and felt threatened that India had them, so they created their own. Signing the treaty means they can't have them anymore, so they refuse.