What is the common examiner trap about Security & Defence in UPSC exams?

Examiners will swap the definitions of 'deterrence by denial' and 'deterrence by punishment', or incorrectly claim the 2018 Land Warfare Doctrine introduced surgical strikes (it was the 2017 Joint Doctrine). They may also confuse this shift with abandoning India's No-First Use policy — no such abandonment is mentioned.

What should UPSC aspirants remember about Security & Defence for Prelims?

1. Target this Data: 28 drone-smuggling incidents (till Feb 2023); speech on Sep 24; Operation Sindoor (2025); Balakot (2019) 2. Target this Nodal Body: Cabinet Committee on Security (CCS) for NFU 2003 3. Target this Legal Point: 2017 Joint Doctrine (surgical strikes), 2018 Land Warfare Doctrine (IBGs), No-First Use doctrine

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News 8 of 19

India Shifts Security Posture: Rajnath Singh Flags 'Perimeter Fallacy', Adopts Deterrence by Punishment

Q: Which body adopted India’s ‘No-First Use’ strategic posture in 2003?

Cabinet Committee on Security, The article states that in 2003, India’s Cabinet Committee on Security (CCS) adopted the ‘No-First Use’ strategic posture for the nation’s official nuclear doctrine. The CCS is a key decision-making body on national security and is chaired by the Prime Minister.

Q: Consider the following statements: 1. Rajnath Singh cautioned that viewing national security solely from the perspective of geographical boundaries would amount to a 'perimeter fallacy'. 2. The 2018 Land Warfare Doctrine formally integrated surgical strikes into sub-conventional operations. 3. Singh cited Operation Sindoor and the 2019 Balakot air strike as examples of India’s capability and resolve. Which of the statements given above is/are correct?

Both 1 and 3, Statement 1 correctly reflects Singh's remark. Statement 2 is wrong because the 2017 Joint Doctrine integrated surgical strikes, while the 2018 Land Warfare Doctrine shifted the Army to a proactive approach using Integrated Battle Groups. Statement 3 is correct as Singh cited the surgical strikes, Balakot 2019 and Operation Sindoor 2025.

Q: According to a government statement from March 2023, how many incidents involving the recovery of drones in arms and narcotics smuggling were reported in the three years till February 2023?

28, The article specifically mentions that a March 2023 government statement said there were 28 incidents involving the recovery of drones involved in arms and narcotics smuggling in the three years till February 2023. This exact figure is a potential Prelims data point.

Q: What does the shift from 'deterrence by denial' to 'deterrence by punishment' signal for India’s security approach?

India may undertake punitive retaliatory actions beyond responding to the immediate attack, Singh's citation of surgical strikes, Balakot and Operation Sindoor, and his warning that a terror attack from Pakistani soil would be treated as an 'act of war', show that responses need not be limited to the immediate attack. There is no mention of abandoning No-First Use or using nuclear weapons for conventional attacks.

Security & Defence EconomyHIGH

Target:UPSC GS-IIIMPSCSSC GATeachingPrelims HighMains HighStatic GK Link

26 Sept 2026

~2 min

Source: Indian Express

Key Data:September 24 (address date)28 drone-smuggling incidents (till Feb 2023)2003 CCS No-First Use doctrine2017 Joint Doctrine2018 Land Warfare DoctrineOperation Sindoor (2025)

Bodies:Ministry of DefenceCabinet Committee on SecurityIndian Armed ForcesUnion Home Ministry

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~2 min · Quick mode

What This Article Covers

1.Rajnath Singh flags 'perimeter fallacy' – national security is not just about guarding borders; drone, cyber, lone-wolf and disinformation threats are equally critical.

2.India's approach is evolving from 'deterrence by denial' to 'deterrence by punishment', making adversaries fear unacceptable retaliatory costs.

3.Examiner's angle: link this to India's 2003 No-First Use nuclear doctrine, 2017 Joint Doctrine, 2018 Land Warfare Doctrine, and economic/energy security as part of national security.

The Big Picture

Prelims · HighMains · High

Defence Minister Rajnath Singh has introduced the term 'perimeter fallacy' to argue that national security cannot be limited to guarding physical borders. He says India's deterrence approach is shifting from denial to punishment, with economic, energy, cyber and disinformation threats now central. This signals a more proactive Indian security posture, backed by recent strikes like Balakot and Operation Sindoor.

Exam Lens

Quick Exam Facts From News

Date of AddressSeptember 24, 2026

Core Term CoinedPerimeter Fallacy

Deterrence ShiftDeterrence by Denial → Deterrence by Punishment

Nuclear Doctrine Year2003 (CCS, No-First Use)

2017 DoctrineIntegrated surgical strikes into sub-conventional ops

2018 DoctrineProactive approach with Integrated Battle Groups

Drone Smuggling Incidents28 (three years till Feb 2023)

Strikes CitedSurgical strikes, Balakot 2019, Operation Sindoor 2025

1-Minute Revision

›Date of Address: September 24, 2026
›Core Term Coined: Perimeter Fallacy
›Target this Data: 28 drone-smuggling incidents (till Feb 2023); speech on Sep 24; Operation Sindoor (2025); Balakot (2019)
›Target this Nodal Body: Cabinet Committee on Security (CCS) for NFU 2003
›Target this Legal Point: 2017 Joint Doctrine (surgical strikes), 2018 Land Warfare Doctrine (IBGs), No-First Use doctrine

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News Snapshot

🛡️

Perimeter Fallacy

Treating geographical borders as the absolute limit of national security ignores fluid modern threats like drones, cyberattacks, and disinformation.

⚖️

Deterrence by Punishment

India is shifting from merely denying adversaries success to threatening unacceptable retaliatory costs, signalling a more proactive defence posture.

🔋

Economic & Energy Security

National security now includes protecting supply chains, including crude oil imports, semiconductors, and critical infrastructure from hybrid attacks.

Detailed Analysis & Strategic Depth

Context / Background

On September 24, Defence Minister Rajnath Singh warned that treating national security as only guarding geographical boundaries is a 'perimeter fallacy'. Traditional security relied on border fortifications and troop deployments. But modern threats — drones, cyberattacks, disinformation, lone-wolf attacks — are fluid, crossing borders invisibly, as seen in Russian attacks on Ukraine's energy grid and drone smuggling through Punjab.

Core Analysis & Implications

Singh linked national security to economic and energy security. India is a major crude importer, so a closure of the Strait of Hormuz or Houthi attacks on shipping force costly detours via the Cape of Good Hope. Similar logic applies to semiconductor supply chains. The shift to 'deterrence by punishment' means making adversaries believe the cost of any attack will be unacceptable — a departure from the earlier 'deterrence by denial' mindset.

Doctrinal Evolution & Operational Signals

India is already operationalising this shift. The 2017 Joint Doctrine of Indian Armed Forces integrated surgical strikes; the 2018 Land Warfare Doctrine adopted a proactive approach using Integrated Battle Groups. Singh cited the surgical strikes, 2019 Balakot air strike and 2025's Operation Sindoor as proof of credible punitive capability. The warning that a terror attack from Pakistani soil is an 'act of war' signals responses beyond immediate retaliation.

Nuclear Dimension & Future Outlook

At the nuclear level, India's 2003 CCS No-First Use doctrine already specified 'massive' retaliation designed to inflict unacceptable damage — a classic deterrence-by-punishment posture. Extending this logic conventionally increases the credibility of Indian deterrence. However, the threat of punishment only works if the adversary believes India has both capability and resolve. Future actions will need to back doctrine with demonstrated operations, especially in hybrid and sub-conventional domains.

Key Facts at a Glance

Date of AddressSeptember 24, 2026

Core Term CoinedPerimeter Fallacy

Deterrence ShiftDeterrence by Denial → Deterrence by Punishment

Nuclear Doctrine Year2003 (CCS, No-First Use)

2017 DoctrineIntegrated surgical strikes into sub-conventional ops

2018 DoctrineProactive approach with Integrated Battle Groups

Drone Smuggling Incidents28 (three years till Feb 2023)

Strikes CitedSurgical strikes, Balakot 2019, Operation Sindoor 2025

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Practice exam-style questions based on this article.

Q1Static LinkageEasyUPSC, SSC, State PSC

Which body adopted India’s ‘No-First Use’ strategic posture in 2003?

Q2Statement-basedHardUPSC, SSC

Consider the following statements:

1. Rajnath Singh cautioned that viewing national security solely from the perspective of geographical boundaries would amount to a 'perimeter fallacy'.

2. The 2018 Land Warfare Doctrine formally integrated surgical strikes into sub-conventional operations.

3. Singh cited Operation Sindoor and the 2019 Balakot air strike as examples of India’s capability and resolve.

Which of the statements given above is/are correct?

Q3Data-centricMediumUPSC, SSC, Banking

According to a government statement from March 2023, how many incidents involving the recovery of drones in arms and narcotics smuggling were reported in the three years till February 2023?

Q4Application/ImpactMediumUPSC, State PSC

What does the shift from 'deterrence by denial' to 'deterrence by punishment' signal for India’s security approach?

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India Shifts Security Posture: Rajnath Singh Flags 'Perimeter Fallacy', Adopts Deterrence by Punishment

Exam Lens

Quick Exam Facts From News

1-Minute Revision

News Snapshot

Perimeter Fallacy

Deterrence by Punishment

Economic & Energy Security

Detailed Analysis & Strategic Depth

Context / Background

Core Analysis & Implications

Doctrinal Evolution & Operational Signals

Nuclear Dimension & Future Outlook

Prelims Flashpoints

Key Facts at a Glance