---
title: "Nuclear Non-Proliferation Treaty — Definition & Meaning"
description: "The Nuclear Non-Proliferation Treaty is a 1968 agreement aimed at preventing nuclear weapons spread, crucial for diplomats and policy researchers."
url: "https://modeldiplomat.com/learn/glossary/nuclear-non-proliferation-treaty"
---

[New](https://modeldiplomat.com/)

#

Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The Nuclear Non-Proliferation Treaty is a 1968 multilateral treaty that seeks to prevent the spread of nuclear weapons, promote disarmament, and enable peaceful nuclear cooperation.
- Why does India refuse to sign the NPT?
- What are the three pillars of the NPT?
- Which states are recognised Nuclear-Weapon States under the NPT?
- How does the NPT differ from the TPNW?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

Go beyond the definition

## Research Nuclear Non-Proliferation Treaty like a delegate

Model Diplomat's AI drafts position papers, speeches, and country research with real sources — built for MUN and politics students.

## Timeline

1. 1 July 1968

   The Treaty on the Non-Proliferation of Nuclear Weapons (NPT) was opened for signature on and entered into force on 5 March 1970.

2. 5 March 1970

   The Treaty on the Non-Proliferation of Nuclear Weapons (NPT) was opened for signature on 1 July 1968 and entered into force on .

3. 1 January 1967

   The treaty draws a legal distinction between Nuclear-Weapon States (NWS) — defined under Article IX(3) as those that manufactured and exploded a nuclear devi…

## Research it like a delegate

Research on modeldiplomat.com

## Ask a follow-up about Nuclear Non-Proliferation Treaty

Open a cited briefing in Model Diplomat search — timelines, positions, and sources you can use in committee or exam answers.

[Start research on Nuclear Non-Proliferation Treaty](https://modeldiplomat.com/search?q=Explain%20Nuclear%20Non-Proliferation%20Treaty%20%E2%80%94%20key%20dates%2C%20actors%2C%20positions%2C%20and%20sources)

Example

In 2008, the Nuclear Suppliers Group granted India a clean waiver despite India's non-signatory status to the NPT, enabling the Indo-US civil nuclear cooperation agreement to proceed.

Keep learning

## Go deeper than the definition

Lessons

[Functional Agencies Ilo Unesco Fao Iaea](https://modeldiplomat.com/learn/lessons/exam-global-institutions-functional-agencies-ilo-unesco-fao-iaea)[The Cold War Blocs Proxy Wars Detente](https://modeldiplomat.com/learn/lessons/upsc-world-history-the-cold-war-blocs-proxy-wars-detente)

Courses

[Exam Global Institutions](https://modeldiplomat.com/learn/courses/exam-global-institutions)[Upsc World History](https://modeldiplomat.com/learn/courses/upsc-world-history)

[Explore all Civil Service & Diplomatic Exams lessons](https://modeldiplomat.com/learn/civil-services)[Test yourself with a quiz](https://modeldiplomat.com/learn/glossary/quiz/civil-services)

## Take Nuclear Non-Proliferation Treaty beyond the glossary

Ask the AI research engine built for diplomacy — get briefings, position papers, and speeches with sources you can cite in committee.