India's Neighbours

Indian & World Geography
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Version 1Updated 7 Mar 2026

Article 51 of the Constitution of India states: 'The State shall endeavour to — (a) promote international peace and security; (b) maintain just and honourable relations between nations; (c) foster respect for international law and treaty obligations in the dealings of organised peoples with one another; and (d) encourage settlement of international disputes by arbitration.' Article 253 of the Con…

Quick Summary

India's neighborhood is a critical determinant of its geopolitical standing and internal security. Sharing land borders with seven nations—Pakistan, China, Nepal, Bhutan, Bangladesh, Myanmar, and Afghanistan—and maritime boundaries with Sri Lanka and Maldives, India's foreign policy is intrinsically linked to its immediate periphery.

The 'Neighborhood First Policy' underscores India's commitment to fostering stable, prosperous, and cooperative relations through enhanced connectivity, trade, and cultural exchanges. Key border demarcations like the Line of Control (LoC) with Pakistan and the Line of Actual Control (LAC) with China are central to ongoing disputes, demanding vigilant border management.

Water-sharing agreements, such as the Indus Waters Treaty with Pakistan and the pending Teesta agreement with Bangladesh, are vital for regional stability and resource management.

Strategic initiatives like the 'Act East Policy' integrate India's northeastern states with Southeast Asia, while the 'SAGAR' doctrine focuses on maritime security and cooperation in the Indian Ocean.

Regional organizations like SAARC and BIMSTEC provide platforms for multilateral engagement, though SAARC's effectiveness has been hampered by bilateral tensions. The growing influence of China through initiatives like the Belt and Road Initiative (BRI) and the China-Pakistan Economic Corridor (CPEC) presents a significant strategic challenge, compelling India to strengthen its own connectivity projects and diplomatic outreach.

Understanding these complex bilateral relationships, including historical legacies, economic interdependence, and security challenges, is fundamental for comprehending India's role in regional and global affairs, making it a high-priority topic for the UPSC examination.

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  • 7 Land NeighborsPakistan, China, Nepal, Bhutan, Bangladesh, Myanmar, Afghanistan (disputed border).
  • 2 Maritime NeighborsSri Lanka, Maldives.
  • Longest BorderBangladesh (4,096 km).
  • LoCIndia-Pakistan (J&K, 1971).
  • LACIndia-China (undemarcated, 1962).
  • Radcliffe LineIndia-Pakistan/Bangladesh (Partition).
  • McMahon LineIndia-China (Eastern Sector, disputed).
  • Durand LineAfghanistan-Pakistan (India claims part).
  • Article 51Promote international peace.
  • Article 253Implement international treaties.
  • Key TreatiesShimla (1972, India-Pak), Panchsheel (1954, India-China), IWT (1960, India-Pak), LBA (2015, India-B'desh), Indo-Bhutan Friendship (2007).
  • PoliciesNeighborhood First, Act East, SAGAR.
  • Water DisputesIndus (Pak), Teesta (B'desh), Mahakali (Nepal).
  • Strategic ChokepointsSiliguri Corridor (Chicken's Neck), Chumbi Valley, Palk Strait.
  • China's InfluenceBRI, CPEC, String of Pearls.

PCNB-BSMM + A (Pakistan, China, Nepal, Bhutan, Bangladesh, Sri Lanka, Myanmar, Maldives + Afghanistan)

Pakistan: Indus Shimla LoC (Indus Waters, Shimla Agreement, LoC) China: Panchsheel LAC McMahon (Panchsheel, LAC, McMahon Line) Nepal: Mahakali Kalapani Open (Mahakali Treaty, Kalapani, Open Border) Bhutan: Friendship Hydropower Doklam (Friendship Treaty, Hydropower, Doklam) Bangladesh: LBA Teesta Connect (Land Boundary Agreement, Teesta, Connectivity) Sri Lanka: Fishermen Katchatheevu Hambantota (Fishermen issue, Katchatheevu, Hambantota Port) Myanmar: ActEast Kaladan Border (Act East, Kaladan Project, Border Security) Maldives: SAGAR IndiaOut China (SAGAR, India Out campaign, China influence) Afghanistan: Durand Chabahar Security (Durand Line, Chabahar Port, Regional Security)

Key Border Lines Mnemonic: Really Many Lines Look Difficult (Radcliffe, McMahon, LoC, LAC, Durand)

Strategic Policies Mnemonic: Neighbors First Act East SAGAR (Neighborhood First, Act East, SAGAR)

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