Best Class 12 Political Science Chapter 7 Notes – Security in the Contemporary World (CBSE 2025–26)

Introduction to Security in the Contemporary World – Class 12 Political Science Chapter 7

Security is one of the most fundamental concerns of any state and its people. But what does “security” actually mean in a world that has changed dramatically since the Cold War? Chapter 7 of Class 12 Political Science — Security in the Contemporary World — pushes students to think beyond missiles and armies and ask: what are the real threats facing people today?

These Class 12 Political Science Chapter 7 Notes draw a clear line between traditional security (military threats between states) and non-traditional security (hunger, disease, climate change, terrorism). Understanding both sides is essential for CBSE board exams, as questions from this chapter frequently appear in all formats — MCQs, short-answer, and 6-mark long-answer questions. According to the CBSE official curriculum, Political Science carries significant weightage in Class 12 Board examinations.

Whether you’re preparing for your board exams or just building a conceptual foundation for competitive exams, these Class 12 Political Science Chapter 7 notes break down every key idea in plain, accessible language — exactly the way your Political Science teacher would explain it in class.

Table of Contents

1. What is Security? – Class 12 Political Science
2. Traditional Concept of Security in Class 12 Political Science Chapter 7
   • External Threats
   • Internal Threats
3. Balance of Power and Alliances
4. Non-Traditional Concept of Security – Class 12 Political Science Chapter 7
   • Human Security
   • Global Security
5. New Sources of Threat in the Modern World
6. Cooperative Security
7. India’s Security Strategy
8. Key Arms Control Treaties
9. Important Board Exam Questions
10. Quick Revision Points
11. External Resources for Further Reading

What is Security? – Class 12 Political Science Chapter 7 Explained

At its simplest, security means freedom from threats — the ability of people and nations to live without fear of harm, violence, or coercion. In Class 12 Political Science, security is studied as a layered concept that has evolved over centuries alongside changes in warfare, global politics, and human development.

For a long time, security was viewed almost entirely through the lens of military power — which nation has the stronger army, the bigger arsenal, or the more powerful allies. That view still matters today, but it is no longer complete. Modern political thinkers now argue that a person can be “secure” from foreign invasion yet still live in daily fear of poverty, disease, or environmental collapse.

Class 12 Political Science Chapter 7 Notes introduce students to both the old and new ways of thinking about security, showing how the concept has evolved in a deeply interconnected world. The United Nations Development Programme (UNDP), in its landmark 1994 Human Development Report, first popularised the concept of human security — a foundational idea in this chapter. This report remains one of the most cited documents in security studies and is directly relevant to your board exam preparation.

Traditional Concept of Security in Class 12 Political Science Chapter 7

The traditional concept of security is the older, state-centred view. It holds that the most serious threat to any country comes from other countries — through military aggression, invasion, or war. In Class 12 Political Science Chapter 7, the NCERT textbook presents this as the dominant framework in international relations for most of modern history.

External Threats – Traditional Security

Traditional security theory in Class 12 Political Science focuses on threats that originate outside a country’s borders. These include:

• Military attacks — when another country uses armed force to invade or occupy territory.
• Genocide — systematic destruction of a people or ethnic group, sometimes carried out with state support across borders.
• Nuclear or conventional warfare — large-scale armed conflict between nations.

When a nation faces such threats, it must decide how to respond. Classical security theory offers three main options:

1. Surrender — Accept the demands of the threatening power to avoid conflict. Rarely chosen, but it can prevent mass casualties in extreme situations.
2. Deterrence — Build up your military so that attacking you becomes too costly for the enemy. The core logic: “If you attack me, I will cause unacceptable damage in return.”
3. Self-defense — Use your own military strength to repel or defeat an attack successfully.

The constant management of military power between these options is known as the Balance of Power. This is a key concept students of Class 12 Political Science Chapter 7 must understand thoroughly for board exams.

Internal Threats – Traditional Security in Class 12 Political Science

Traditional security is not only about foreign enemies. Class 12 Political Science Chapter 7 Notes also recognise threats that come from within a nation’s own borders. These include:

• Civil war — armed conflict between groups within the same country.
• Separatism — movements by regions or communities seeking independence from the central government.
• Law and order breakdowns — large-scale internal violence, ethnic riots, or insurgency.

After World War II, it became clear that many countries — especially newly independent ones in Asia and Africa — faced serious internal threats alongside external ones. The focus of security policy had to expand accordingly. This is a key reason why Class 12 Political Science devotes a full chapter to the evolution of security concepts.

Balance of Power and Alliances – Class 12 Political Science

The Balance of Power is a central idea in Class 12 Political Science Chapter 7. It refers to a situation where no single country is so much more powerful than others that it can dominate or threaten everyone else. When power is roughly balanced, peace is more likely to be stable.

To maintain this balance, countries form alliances — formal agreements to support one another in case of an attack. Alliances shift based on strategic interests, not just shared values or ideology.

A classic example used in Class 12 Political Science NCERT: In the 1980s, the United States supported Islamic militant groups in Afghanistan to counter Soviet influence — even though these same groups later became a security threat to the West. This illustrates how alliance decisions are driven by short-term strategic calculations rather than long-term values.

Newly independent nations in Asia and Africa faced a double challenge after gaining independence: fear of military aggression from more powerful states, combined with the need to manage fragile internal unity. Their security calculations were often far more complex than those of established powers.

Non-Traditional Concept of Security – Class 12 Political Science Chapter 7

The non-traditional concept of security emerged strongly after the Cold War. It argues that the biggest threats to human life are not always military in nature. Poverty, disease, environmental destruction, and terrorism have killed — and continue to kill — more people than most armed conflicts. This shift in thinking is one of the most important ideas in Class 12 Political Science Chapter 7 Notes.

Human Security – Non-Traditional Security in Class 12 Political Science

Human security shifts the focus from protecting the state to protecting individual people. A person living in a conflict-free country can still be deeply insecure if they face:

• Starvation or chronic food insecurity
• Lack of access to basic healthcare
• Persecution based on religion, ethnicity, or gender
• Displacement from their homes due to conflict or natural disaster

Human security is about ensuring that every person has the basic conditions needed to live a dignified and free life. The United Nations Office for the Coordination of Humanitarian Affairs (UNOCHA) works directly on human security issues globally — a useful external reference for students writing project reports on this chapter.

Global Security – Class 12 Political Science Chapter 7 Notes

Global security goes one step further and asks: what threats affect all of humanity together? These are problems no single country can solve alone:

• Climate change and global warming — rising temperatures, extreme weather events, and sea-level rise that affect all nations regardless of their military power.
• Pandemics — diseases like SARS, Bird Flu, AIDS, and COVID-19 that cross borders rapidly and overwhelm health systems worldwide.
• Terrorism — politically motivated violence targeting civilians, which can strike in any country at any time.
• Nuclear proliferation — the spread of nuclear weapons to more countries, dramatically raising the risk of catastrophic conflict.

These global threats are a major focus of Class 12 Political Science Chapter 7, and they are increasingly relevant to real-world events that students witness in the news every day.

New Sources of Threat in the Modern World – Class 12 Political Science

Class 12 Political Science Chapter 7 Notes identify several specific modern threats that don’t fit neatly into the traditional military security framework:

• Terrorism: Organised violence directed at civilians for political purposes. Terrorist groups operate across borders and often exploit weak states or unresolved political conflicts. This is a frequently tested topic in CBSE board exams.
• Human rights violations: When governments suppress free speech, discriminate against minorities, or use violence against their own citizens, this creates deep insecurity for millions of people.
• Internally Displaced Persons (IDPs): People forced to flee their homes due to conflict or persecution, but who remain within their own country’s borders. The displacement of Kashmiri Pandits is a prominent Indian example used in the NCERT textbook.
• Epidemics and health crises: The rapid spread of diseases across borders — as seen with SARS, Mad Cow Disease, and Bird Flu — poses a genuine security threat to entire populations.
• Global poverty and forced migration: Extreme economic inequality pushes people to migrate in search of safety and livelihood, often creating political tensions in receiving countries. According to the World Bank’s Poverty Overview, global poverty remains a significant driver of instability and conflict.

Cooperative Security – A Key Concept in Class 12 Political Science Chapter 7

Since modern threats are global and deeply interconnected, no country can fully protect itself by acting alone. This is the core argument for cooperative security — a concept central to Class 12 Political Science Chapter 7 Notes — where countries, international organisations, and civil society groups work together to address shared threats.

Key institutions involved in cooperative security include:

• United Nations (UN) — provides a forum for diplomacy, peacekeeping missions, and the development of international law. You can explore UN peacekeeping operations directly at the United Nations Peacekeeping website.
• World Bank and IMF — address poverty and economic instability, which are root causes of many conflicts.
• International Committee of the Red Cross (ICRC) — provides neutral humanitarian assistance during armed conflict and natural disasters.
• Non-governmental organisations (NGOs) — play a vital role in promoting peace and human dignity at the grassroots level.

Cooperative security does not eliminate national sovereignty — it simply acknowledges that some problems are too large and complex for any one nation to handle alone. This is a nuanced point that students of Class 12 Political Science should be able to explain clearly in board exams.

India’s Security Strategy – Class 12 Political Science Chapter 7

India’s approach to security is shaped by its unique geographic position, its diverse internal challenges, and its role as one of the world’s largest democracies. Class 12 Political Science Chapter 7 identifies four key pillars of India’s security strategy according to the NCERT textbook:

1. Military strength — India maintains strong armed forces to deter potential aggression, particularly from Pakistan and China, with whom it has had armed conflicts and ongoing territorial disputes.
2. Support for international norms and institutions — India has consistently backed international law, the United Nations, and multilateral agreements. This approach helps protect India’s interests on the global stage without triggering unnecessary conflict.
3. Managing internal security — India faces significant internal security challenges, including militant movements in Nagaland, historical insurgency in Punjab, and ongoing instability in parts of Jammu & Kashmir. Addressing these requires both security operations and sustained political dialogue.
4. Economic development — Poverty and unemployment create conditions in which extremism and crime can flourish. India’s security strategy recognises that sustainable development is itself a form of security — by reducing the social pressures that fuel internal conflict.

Understanding India’s multi-pronged security approach is essential for Class 12 Political Science Chapter 7 Notes exam preparation, as it frequently appears as a 5–6 mark long-answer question.

Key Arms Control Treaties – Class 12 Political Science Chapter 7

Understanding the major international arms control agreements is important for board exam questions in Class 12 Political Science:

Key definitions for Class 12 Political Science Chapter 7 Notes:

• Arms control — Agreements that regulate weapon production and deployment without eliminating weapons entirely.
• Disarmament — The actual reduction or elimination of weapons, going further than arms control.
• Confidence-building measures (CBMs) — Arrangements where countries share military information with each other to reduce the risk of accidental conflict or misunderstanding.

Important Board Exam Questions – Class 12 Political Science Chapter 7

These questions reflect the actual pattern of Class 12 Political Science CBSE board exams. Practising these will help you write structured, high-scoring answers:

Q1. Distinguish between traditional and non-traditional concepts of security. (5–6 marks) Answer: Traditional security in Class 12 Political Science Chapter 7 focuses on military threats between states — war, invasion, and nuclear deterrence. Non-traditional security broadens this to include threats to individuals and humanity — poverty, terrorism, disease, and climate change. Traditional security sees the state as both the object and the provider of security; non-traditional security shifts focus to the individual and the global community.

Q2. What is the ‘Balance of Power’? How do alliances help maintain it? (3–4 marks) Answer: The Balance of Power refers to a situation where no single country becomes so dominant that it can threaten others unchecked. Alliances — formal agreements between states to support each other — help smaller or weaker states counterbalance more powerful ones. However, as Class 12 Political Science Chapter 7 notes, alliances are driven by strategic interests and can shift rapidly.

Q3. What are ‘Internally Displaced Persons’ (IDPs)? Give one example from India. (3 marks) Answer: IDPs are people forced to leave their homes due to conflict, persecution, or disaster but who remain within their own country’s borders — unlike refugees, they have not crossed an international boundary. The displacement of Kashmiri Pandits during the insurgency of the late 1980s is the key Indian example cited in Class 12 Political Science Chapter 7 Notes.

Q4. Explain any four components of India’s security strategy. (5–6 marks) Answer: According to Class 12 Political Science Chapter 7, India’s security strategy includes: (1) maintaining a strong military to deter threats from Pakistan and China; (2) supporting international law and institutions like the UN; (3) managing internal security in regions like Nagaland, Punjab, and Kashmir through force and dialogue; and (4) pursuing economic development to reduce the poverty that fuels internal conflict.

Q5. What is ‘cooperative security’? Why is it necessary? (4 marks) Answer: Cooperative security, as explained in Class 12 Political Science Chapter 7, refers to countries and international organisations working together on threats no single nation can handle alone — such as terrorism, pandemics, and climate change. It is necessary because modern threats are transnational; military power alone cannot stop a virus, reverse climate change, or dismantle a globally networked terrorist organisation.

Quick Revision Points – Class 12 Political Science Chapter 7 Security

• Security means protection from threats that prevent people from living freely and peacefully.
• Traditional security covers military threats — external (war, invasion) and internal (civil war, separatism).
• Three state responses to external threats: surrender, deterrence, or self-defense.
• Balance of Power prevents any one state from dominating; alliances help maintain this balance.
• Non-traditional security covers threats to individuals: poverty, disease, climate change, and terrorism.
• Human security focuses on individual wellbeing; global security addresses threats to all of humanity.
• Modern dangers include terrorism, pandemics, IDPs, human rights violations, and forced migration.
• Cooperative security uses international institutions — UN, World Bank, Red Cross — to tackle shared threats.
• India’s security strategy rests on four pillars: military strength, international law, internal stability, and economic development.
• Key arms treaties to memorise: NPT (1968), ABM (1972), BWC (1972), CWC (1992), START (1991).

For complete CBSE preparation, also read:

• • Class 12 Political Science Chapter 7 Notes – Security in the Contemporary World
  • Class 12 Political Science Chapter 6 Notes – Globalisation