1. Nuclear Proliferation: Meaning and Types

Nuclear Proliferation refers to the spread of nuclear weapons, fissionable material, and weapons-applicable nuclear technology to nations not recognized as "Nuclear Weapon States."

Types of Proliferation

• Horizontal Proliferation: The spread of nuclear weapons to states that do not already possess them (e.g., a non-nuclear state becoming nuclear).
• Vertical Proliferation: The increase in the number and destructive capability of nuclear weapons by states that already have them (arms race between existing nuclear powers).

The Security Dilemma

This is a fundamental concept in global security. When one state increases its military strength (like acquiring nuclear weapons) to ensure its own security, it inadvertently makes other states feel insecure. These states then increase their own strength, leading to a never-ending cycle of tension.

2. Major Arms Control Treaties

To prevent a nuclear catastrophe, the international community has developed several legal frameworks for disarmament and non-proliferation.

A. Non-Proliferation Treaty (NPT, 1968)

The NPT is based on three main pillars: Non-proliferation, Disarmament, and the Peaceful use of nuclear energy. It recognizes only five states as nuclear powers: the USA, Russia, UK, France, and China (the P5).

• India's Stance: India has not signed the NPT, calling it "discriminatory" because it creates a permanent divide between nuclear "haves" and "have-nots."

B. Comprehensive Test Ban Treaty (CTBT, 1996)

This treaty bans all nuclear explosions, for both civilian and military purposes, in all environments (underwater, atmosphere, underground).
Current Status: It has not yet entered into force because several key nations (including India, Pakistan, and the USA) have either not signed or not ratified it.

3. International Terrorism: Concept and Evolution

International terrorism is the use of violence—or the threat of violence—to instill fear and achieve political, religious, or ideological goals across national borders. Unlike traditional war, it targets civilians and non-combatants.

Evolution of Terrorism

• Traditional Terrorism: Usually had clear, local political goals (e.g., independence for a specific territory).
• New/Transnational Terrorism: Characterized by global networks (like Al-Qaeda or ISIS), religious fanaticism, and the use of modern technology and the internet for recruitment and radicalization.
• State-Sponsored Terrorism: When a government provides support, funding, or safe havens to terrorist groups to destabilize a rival nation.

4. Challenges to Global Security

Modern security threats are no longer just about armies crossing borders. They have become "asymmetric" and complex.

Key Challenges

• Asymmetric Warfare: A conflict where a weak actor (terrorists) uses unconventional tactics to fight a much stronger actor (a state).
• Cyber Terrorism: Attacks on a nation's digital infrastructure, power grids, or financial systems.
• Nuclear Terrorism: The ultimate nightmare scenario—a non-state terrorist group gaining access to a "dirty bomb" or a small nuclear device.

5. Exam Focus: Tips and FAQs