[TOPIC CLASSIFICATION]

• Topic type: Institutional + Geostrategic + Current Affairs
• PYQ frequency: High
• Exam stage: Prelims + Mains
• Primary GS paper: GS3 (Internal Security) + GS2 (IR) + GS1 (Geography)

[EXAMINER REASONING]

1. Trap: Conflating LAC (Line of Actual Control) with LoC (Line of Control) - different legal status, management mechanisms
2. Most confused: Patrol Points vs Patrol Limits vs Face-off sites vs Friction points - terminology precision matters in Mains
3. Key anchor: 2020 Galwan clash → LAC management overhaul (buffer zones, disengagement, Corps Commander talks)
4. Current affairs hook: India-China disengagement at Depsang/Demchok (2024), India-Pak ceasefire 2021 holding, FMR review with Myanmar, Smart Fence pilot (CIBMS)
5. Mains hinge: Border infrastructure asymmetry (China's dual-use vs India's BRO catch-up), technology insertion (CIBMS, satellites), institutional coordination (DMA, CDC, BRO)

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Core Concept

India shares 15,106 km land borders with 7 countries - management architecture varies by neighbour, threat perception, and terrain. Border management ≠ border defence - former includes administration, development, trade facilitation, people-to-people; latter is military mandate.

India-China: LAC (3,488 km)

Not demarcated, not delineated - differing perceptions create overlapping claims. Three sectors: Western (Ladakh, 1,597 km), Middle (HP/UK, 545 km), Eastern (Sikkim/Arunachal, 1,346 km). Key concepts:

• Patrol Points (PP): 65+ designated points up to which Indian patrols go (e.g., PP14 Galwan, PP15 Hot Springs, PP17A Gogra)
• Patrol Limits: Furthest extent of claim line patrolled
• Face-off sites: Where patrols confront (traditional: Trig Heights, Dumchele, Chumar, Asaphila, Longju, Yangtse)
• Friction points: Newer flashpoints post-2020 (Galwan, Pangong Tso north/south bank, Gogra-Hot Springs, Depsang, Demchok)
• Buffer Zones: Mutual disengagement areas (e.g., PP14, PP15, PP17A) - no patrolling by either side temporarily

2020 Galwan turning point: 20 soldiers killed → massive mobilisation (50k+ troops each side) → 21 rounds Corps Commander talks → disengagement at Galwan, Pangong, Gogra, Hot Springs. Depsang (PP10-13) and Demchok (CNJ) remain unresolved (2024).

Institutional: Working Mechanism for Consultation & Coordination (WMCC, 2012), Special Representatives (SR, 2003 - NSA Ajit Doval/China FM), Corps Commander talks. Agreements: 1993 BPTA, 1996 CBM, 2005 Political Parameters, 2012 WMCC, 2013 BDCA - all predicated on "mutual and equal security" now contested.