Subject: International Relations – India-Nepal Border Dispute; History – Treaty of Sugauli; Neighbourhood First Policy.
Why in News?
What is Lipulekh Pass?
Location
Strategic Significance
Nepal’s Position on Lipulekh
Territorial Claim
Legal and Political Actions
2026 Objection
India’s Position and Response
Core Argument
Rejection of Nepal’s Claim
Open to Dialogue
Background: The Dispute’s Origins
| Year | Event |
|---|---|
| 1816 | Treaty of Sugauli – Kali River established as Nepal’s western boundary |
| 1962 | After Sino-Indian War, Indian troops established posts in Kalapani valley |
| 2015 | India-China agreed to open Lipulekh for trade and yatra (Nepal not consulted) |
| 2020 | India built 80-km road from Dharchula to Lipulekh; Nepal issued new map claiming the area |
| 2025 | India-China agreed to resume border trade via Lipulekh (August) |
| 2026 | Yatra resumption announced (April); Nepal protested (May) |
Static-Dynamic Linkage
Static (Polity/International Relations/History Syllabus)
Dynamic (Current Affairs – May 2026)
Source/Reference:
Subject: International Relations – Space Security; Science & Tech – Dual-Use Satellites; IHL – Principle of Distinction.
Why in News?
What are Dual-Use Satellites?
Definition
Why Dual-Use is Inevitable
The Legal Framework: Principle of Distinction
Outer Space Treaty (1967)
International Humanitarian Law (IHL)
Real-World Examples
Viasat KA-SAT Cyber Attack (Initial hours of Russia-Ukraine War, 2022)
GPS Spoofing Incidents
Carrier Strike Group Positioning
Operational Realities of Modern Space Warfare
Implications for India
Strategic Importance
Vulnerabilities
Diplomatic and Legal Challenges
Static-Dynamic Linkage
Static (International Relations / Science & Technology / Polity Syllabus)
Dynamic (Current Affairs – May 2026)
Source/Reference:
Subject: Defence – Indigenisation; Science & Tech – Missile Technology; Atmanirbhar Bharat; Naval Warfare.
Why in News?
What is NASM-SR?
Definition
Key Specifications
Key Advanced Features
‘Man-in-Loop’ Guidance
‘Waterline Hit’ Capability
Salvo Launch Capability
Strategic Significance
Enhanced Naval Strike Capability
Atmanirbhar Bharat in Defence
Operational Flexibility
Static-Dynamic Linkage
Static (Science & Technology/Defence Syllabus)
Dynamic (Current Affairs – May 2026)
Source/Reference:
Subject: GS Paper I: Geography (Himalayan region, strategic passes), GS Paper III: Infrastructure & Defence (Border Roads Organisation)
Why in News?
Project Deepak of the Border Roads Organisation celebrated its 66th Raising Day on May 4, 2026, highlighting its long-standing role in developing strategic infrastructure in the Western Himalayas.
Key Facts & Features
Disaster Management Role
UPSC-Oriented Analysis
Source:
https://www.pib.gov.in/PressReleasePage.aspx?PRID=2257901®=3&lang=1
Subject: Disaster Management – Early Warning Systems; Science & Tech – Telecom Technology; Indigenous Innovation – C-DOT.
Why in News?
What is Cell Broadcast System (CBS)?
Definition
Key Features
User Experience
Integration with SACHET Platform
SACHET (Integrated Alert System)
How CBS Complements SACHET
Technology Behind CBS
Developed by: Centre for Development of Telematics (C-DOT) – telecom R&D centre under DoT
Technical Specifications
Operational Use Cases
Already Successfully Deployed
Planned Applications
Static-Dynamic Linkage
Static (Disaster Management / Science & Technology Syllabus)
Dynamic (Current Affairs – May 2026)
Source/Reference:
GS Paper II – International Relations (Bilateral Relations) | GS Paper I – Geography
Border Disputes; India-Nepal Relations; Kalapani-Lipulekh Issue; Treaty of Sugauli (1816)
Introduction
The India–Nepal border dispute has resurfaced after India resumed the Kailash Manasarovar pilgrimage via Lipulekh Pass. Nepal protested, claiming Lipulekh, Kalapani, and Limpiyadhura based on the Treaty of Sugauli (1816), while India rejected this, citing long-standing usage since 1954. The issue underscores persistent boundary tensions despite close bilateral ties.
Main Body
The Lipulekh Pass: Strategic and Religious Significance
Geographical Location:
Strategic Importance:
Religious Significance:
The Core of the Dispute: Treaty of Sugauli (1816)
Nepal’s Position:
India’s Position:
The Interpretational Dispute:
The Kalapani-Lipulekh Issue: A Broader Context
Kalapani Region:
Link to India-China Relations:
Previous Flare-Ups:
India’s Actions: Pilgrimage Resumption and Bypassing Nepal
The 2026 Announcement (May 4, 2026):
Why This Escalated Tensions:
India’s Defense:
Diplomatic and Legal Dimensions
Bilateral Mechanisms:
Nepal’s Diplomatic Strategy:
India’s Stance:
Treaty of Sugauli (1816) – Historical Background:
Implications for India-Nepal Relations
Strains on Bilateral Ties:
China Factor:
Way Forward:
Conclusion
The Lipulekh dispute stems from differing interpretations of the 1816 Treaty of Sugauli—Nepal claims it via the Kali River boundary, while India cites long-standing use since 1954. The recent flare-up after India resumed the pilgrimage highlights unresolved borders, trust deficits, and China’s shadow. Both sides should avoid unilateral steps and revive dialogue mechanisms.
UPSC Mains Practice Question
GS Paper III – Security (Defence) | GS Paper III – Environment & Ecology | GS Paper II – Governance
Strategic Infrastructure; China Containment; Andaman & Nicobar Islands; Tribal Rights; Environmental Clearance
Introduction
The ₹92,000-crore Great Nicobar project—featuring a transshipment port, airport, township, and power units—has triggered sharp debate. Supporters see it as vital for economic growth and strategic leverage near the Malacca Strait, while critics call it environmentally and socially damaging. Despite NGT clearance in Feb 2026, concerns persist.
Main Body
Project Components and Scale
The Four Key Components:
Investment and Scale:
Strategic Importance: Monitoring the Malacca Strait
The Malacca Strait Chokepoint:
Proximity to the Strait:
Surveillance and Domain Awareness:
Countering China’s String of Pearls:
Environmental and Tribal Concerns
Environmental Impact:
Tribal Communities:
National Green Tribunal (NGT) Clearance (February 16, 2026):
Government’s Position on Environment:
Parallels with the Strait of Hormuz Crisis
Learning from West Asia:
The Malacca Dilemma:
Economic Rationale: Transshipment Hub
Capturing Transshipment Cargo:
Integration with Act East Policy:
Way Forward: Balancing Security and Ecology
For the Government:
For the Opposition:
For Strategic Communication:
Long-Term Vision:
Conclusion
The ₹92,000-crore Great Nicobar project is strategically vital near the Malacca Strait, seen as a counter to China’s presence in the Indian Ocean. While cleared by the NGT, it faces criticism over environmental and tribal impacts. India must balance security needs with ecological and indigenous safeguards.
UPSC Mains Practice Question