Overview

Previous Year UPSC-CSE Questions By the end you will be able to draft model answers for the following UPSC questions. Each question carries a collapsible framework showing how to approach it in the exam.

  1. UPSC Mains 2013 GS-IIIn respect of India – Sri Lanka relations, discuss how domestic factors influence foreign policy.
    How to structure the answer in the exam

    Directive verb: Discuss · Approach: State the principle, then illustrate with the India-Sri Lanka case across the eras.

    Introduction: Open with the principle that foreign policy is the interplay of domestic and external factors, sharpest with a close neighbour.

    Body (sub-themes to develop):

    • The early case: persons of Indian origin and the Sirimavo-Shastri Pact of 1964 as a domestic-driven settlement.
    • The Tamil question: Tamil Nadu's politics shaping India's stance on the island's ethnic conflict.
    • The structural point: a federal democracy lets regional sentiment reach into foreign policy.
    • The balance: national interest versus domestic pressure in handling a neighbour.

    Conclusion: Conclude that with a close neighbour like Sri Lanka, domestic factors are not noise but a permanent input into foreign policy.

  2. UPSC Prelims 2006 GS Paper IConsider the following statements:
    1. Assam shares a border with Bhutan and Bangladesh.
    2. West Bengal shares a border with Bhutan and Nepal.
    3. Mizoram shares a border with Bangladesh and Myanmar.

    Which of the statements given above are correct?

    1. a 1, 2 and 3
    2. b 1 and 2, only
    3. c 2 and 3, only
    4. d 1 and 3, only
    How to approach this Prelims question

    Question type: Border geography

    Approach: Recall which Indian state touches which neighbour using the neighbours map.

    Trap to watch: All three look plausible; the map confirms each pairing, so the answer is all three, not a subset.

    Key facts to recall:

    • Assam borders Bhutan and Bangladesh
    • West Bengal borders Bhutan and Nepal
    • Mizoram borders Bangladesh and Myanmar

    Answer signal: All three statements are correct, so option (a).

  3. UPSC Prelims 1996 GS Paper IThe Palk Bay lies between
    1. a Gulf of Kachchh and Gulf of Khambhat
    2. b Gulf of Mannar and Bay of Bengal
    3. c Lakshadweep and Maldives' Islands
    4. d Andaman and Nicobar Islands
    How to approach this Prelims question

    Question type: Map location

    Approach: Place the Palk Bay in the south-east, between India and Sri Lanka.

    Trap to watch: The western-coast gulfs (Kachchh, Khambhat) are distractors; the Palk Bay is in the south-east.

    Key facts to recall:

    • The Palk Strait and Palk Bay lie between India and Sri Lanka
    • They connect the Gulf of Mannar with the Bay of Bengal
    • The strait is the maritime boundary zone with Sri Lanka

    Answer signal: Between the Gulf of Mannar and the Bay of Bengal, so option (b).

India and its neighbours form the first circle of its foreign policy, the place where the lofty doctrine of non-alignment met the hard ground of geography. Ringed by Pakistan, China, Nepal, Bhutan, Bangladesh, Myanmar and Sri Lanka, the new republic inherited a contested Partition border, a long and disputed Himalayan frontier, and a set of small neighbours wary of a giant in their midst. This part follows each of those relationships from independence to the early 1970s, anchored by the founding treaties that still frame them; the wars are treated in the next part.

The Neighbourhood: Where India's Foreign Policy Meets the Ground

Why the First Circle Is the Hardest Test of Doctrine

Why this matters: A doctrine framed for the great powers, non-alignment, had first to work close to home, among neighbours that shared India's rivers, mountains and history. The neighbourhood is where foreign policy stops being abstract: a border, a refugee, a river, a dispute, each demanding an answer that doctrine alone could not give.

What is the significance of the neighbourhood: It set the limits of India's larger ambition. A foreign policy reflects the interplay of domestic and external factors, and nowhere is that truer than next door, where the size of India and the wariness of its smaller neighbours shaped every relationship from the start.

India's Frontiers: The Seven Neighbours and the Disputed Lines

Mapping the Land and Maritime Borders of the Republic

Distinguishing the geography: India shares land borders with Pakistan and Afghanistan to the north-west, with China, Nepal and Bhutan along the Himalayas, and with Bangladesh and Myanmar to the east; across the narrow Palk Strait to the south lies the island of Sri Lanka. The border states tell the story at a glance, as the map below sets out.

India and Its NeighboursThe land and maritime frontiers, and the treaty that anchors each relationshipAksai ChinPAKISTANIndus Waters Treaty, 1960CHINA (TIBET)Panchsheel, 1954NEPALTreaty, 1950BHUTANTreaty, 1949BANGLADESHFriendship Treaty, 1972MYANMAREastern frontierSRI LANKASirimavo-Shastri Pact, 1964Palk StraitJ&K / LadakhPunjabArunachal PradeshAssamWest BengalMizoramThe seven neighbours and the anchor of each tiePakistanPartition legacy and Kashmir; the Indus Waters Treaty, 1960ChinaPanchsheel 1954, then the Aksai Chin and eastern-boundary disputeNepalThe Treaty of Peace and Friendship, 1950; an open borderBhutanThe Treaty of Friendship, 1949; guided external relationsBangladeshThe Treaty of Friendship, 1972, after the 1971 liberationSri LankaThe Sirimavo-Shastri Pact, 1964, on persons of Indian originBoundaries as depicted on the official map of India; the dashed line marks the disputed northern stretch.Copyright (c) 2026 Digitally Learn. All Rights Reserved.
Figure 1. India and its neighbours: the frontiers and the treaty that anchors each tie.

The map repays close reading. Assam touches both Bhutan and Bangladesh; West Bengal touches Bhutan and Nepal; Mizoram touches Bangladesh and Myanmar; and the northern boundary with China runs along a long, disputed line through the Aksai Chin in the west and the eastern sector once called the North-East Frontier Agency. Each neighbour, the table later in this part shows, was anchored to India by a founding treaty.

India and Pakistan: Partition's Legacy, Kashmir and the Indus Waters Treaty

A Relationship of Conflict Over Kashmir and Cooperation Over Water

Distinguishing the oldest rivalry: With Pakistan the conflict began the moment the two states were born. The dispute over Kashmir opened in 1947, a proxy war broke out in the state that year, and the matter was referred to the United Nations; the relationship has carried that wound ever since. The wars it produced are treated in the next part; here the concern is the structure of the relationship itself.

Yet conflict did not crowd out all cooperation. The two governments worked together to restore the women abducted during Partition to their families, and a long dispute over the sharing of river waters was resolved through the mediation of the World Bank. The India-Pakistan Indus Waters Treaty, signed by Nehru and General Ayub Khan in 1960, has worked through every later conflict, a rare durable success between hostile neighbours.

The Two Faces of the India-Pakistan RelationshipConflict over Kashmir, cooperation over waterConflictThe Kashmir dispute from 1947Referred to the United NationsA relationship of recurring hostilityThe wars treated in the next partCooperationAbducted women restored after PartitionThe Indus Waters Treaty, 1960Brokered by the World BankNehru and Ayub Khan as signatoriesThe Indus Waters Treaty has held through every later conflict, a rare durable success.Even between hostile neighbours, a narrow, well-designed treaty can endure.
Figure 2. The two faces of the India-Pakistan relationship, conflict and cooperation.

India and China: From Panchsheel to the Tibet Question

The Friendly Start, the Annexation of Tibet and the Boundary Dispute

Distinguishing the relationship that soured: Unlike its tie with Pakistan, free India began with China on a warm note. India was among the first countries to recognise the new communist government after the revolution of 1949, and the enunciation of Panchsheel in 1954 marked the high noon of the friendship, captured in the slogan of brotherhood between the two peoples.

Two developments strained the relationship. China annexed Tibet in 1950, removing the historical buffer between the two countries, and when the Dalai Lama sought and was granted asylum in India in 1959, Beijing protested. Alongside ran a boundary dispute: India held that the border had been settled in colonial times, while China rejected any colonial decision and claimed the Aksai Chin in Ladakh and much of the eastern sector then called the North-East Frontier Agency.

The Arc of the Early India-China RelationshipFrom recognition and friendship to the boundary ruptureRecognition, 1949India among the first torecognise the newcommunist governmentPanchsheel, 1954The Five Principles signed;the high noon of thefriendly relationshipTibet and asylumTibet annexed 1950;the Dalai Lama grantedasylum in 1959The boundary disputeAksai Chin and the easternsector contested; the tieruptures by 1962The boundary question over Aksai Chin and the eastern sector turned friendship to conflict.The war of 1962 and its aftermath are treated in the next part of this series.
Figure 3. The arc of the early India-China relationship, from recognition to rupture.

Observable outcome: between 1957 and 1959 China occupied the Aksai Chin and built a strategic road across it, and the long correspondence between the two governments failed to resolve the differences. The rupture that followed, the war of 1962 and its aftermath, belongs to the next part; full diplomatic relations were not restored until 1976.

India and Sri Lanka: The Palk Strait and the Question of Indian-Origin Persons

The Sirimavo-Shastri Pact and the Domestic Threads of Foreign Policy

Distinguishing the maritime neighbour: To the south, across the narrow Palk Strait that separates the Gulf of Mannar from the Bay of Bengal, lies Sri Lanka, then Ceylon. The relationship's defining early issue was human: the status of the people of Indian origin, mostly Tamil plantation labour taken to the island under colonial rule, whom Ceylon's citizenship laws had left stateless.

The issue was settled by agreement. The Sirimavo-Shastri Pact of 1964, between Prime Ministers Sirimavo Bandaranaike and Lal Bahadur Shastri, provided that a large share of these persons would take Ceylonese citizenship and a larger share would be repatriated to India, with the rest left for later negotiation. The arrangement showed how a domestic question, the welfare of a community, drove a foreign-policy settlement.

  • The Palk Strait separates the Gulf of Mannar from the Bay of Bengal.
  • The Sirimavo-Shastri Pact of 1964 addressed persons of Indian origin in Ceylon.
  • Some were granted Ceylonese citizenship, a larger number repatriated to India.
  • The Tamil question would continue to bind the two countries’ domestic politics together.

India and Bangladesh: From Liberation to the 1972 Treaty of Friendship

The Indira-Mujib Treaty and the Warm Beginning

Distinguishing the youngest neighbour: Bangladesh entered the world in 1971, and India's role in its liberation from Pakistan, the war itself treated in the next part, gave the new relationship an exceptionally warm start. The two newly bound states moved quickly to put that warmth into treaty form.

The relationship was framed within a year. The Treaty of Friendship, Cooperation and Peace, signed on 19 March 1972 by Prime Ministers Indira Gandhi and Sheikh Mujibur Rahman and known as the Indira-Mujib Treaty, was a twenty-five-year compact. Its articles bound the two states to respect each other's sovereignty and territorial integrity, to condemn colonialism and racialism, and to reaffirm their faith in non-alignment and peaceful coexistence, carrying the language of India's wider doctrine into the neighbourhood.

India and Nepal: The Special Relationship of the 1950 Treaty

An Open Border, Defence Coordination and the Seeds of Friction

Distinguishing the Himalayan partner: With Nepal, India built what is often called a special relationship, founded on the Treaty of Peace and Friendship signed at Kathmandu on 31 July 1950. The treaty allowed the free movement of people and goods across an open border and committed the two states to close collaboration on matters of defence and foreign policy.

Observable consequences ran both ways. The open border and the deep ties of kinship, trade and faith made the two countries unusually close, yet the very asymmetry of the relationship, a small kingdom bound tightly to a large republic, planted the seeds of the periodic friction over sovereignty and equal treatment that has marked the relationship since. The treaty remains in force, and contested, to this day.

Bhutan and the Himalayan Frontier

The 1949 Treaty, the Guided Frontier and the Eastern Approaches

Distinguishing the guided relationship: With Bhutan, India inherited and renewed the role the British had played. The Treaty of Friendship of 1949 committed India to exercise no interference in Bhutan's internal administration, while Bhutan agreed to be guided by India's advice in the conduct of its external relations, a formula that made the kingdom a protected northern buffer.

The wider frontier completed the ring. The merger of Sikkim as the twenty-second state in 1975, treated earlier in this series, secured the central Himalayan approach; to the east, the long and lightly governed border with Myanmar framed the approach to the North-East. Together with Nepal and Bhutan, these formed the Himalayan and eastern frontier that the war with China had shown to be dangerously exposed.

The Pattern of India's Neighbourhood Policy

Size, Asymmetry and the Perennial Dilemma of the Large Neighbour

Distinguishing the recurring pattern: Across these relationships runs a single structural fact. India is far larger than any of its neighbours in size, population and power, and that asymmetry shaped every tie: the smaller states feared domination even as they needed the partnership, and India had to reassure as much as it led.

The Foundational Treaties of the NeighbourhoodOne anchor for each early bilateral relationshipBhutan, 1949Treaty of Friendship;India guides Bhutan’sexternal relationsNepal, 1950Treaty of Peace andFriendship; an openborder and free movementPakistan, 1960The Indus Waters Treaty;World Bank brokered;Nehru and Ayub KhanSri Lanka, 1964The Sirimavo-Shastri Pacton persons of Indianorigin in CeylonBangladesh, 1972Treaty of Friendship,Cooperation and Peace;the Indira-Mujib TreatyChina, 1954Panchsheel; the friendlystart that the boundarydispute undidSix treaties, six relationships: the legal scaffolding of India’s first circle of diplomacy.
Figure 4. The foundational treaties of the neighbourhood, one anchor for each relationship.

The treaties were the answer to the dilemma. Each founding compact tried to fix the terms of an unequal friendship in writing, and the table below gathers them. Where the treaty was narrow and mutual, as with the Indus waters, it endured; where it was broad and asymmetric, as with Nepal and Bhutan, it bred the very resentment it sought to prevent.

Table 1. The foundational treaties of India's neighbourhood, 1949 to 1972.
Neighbour Founding anchor Year The defining issue
Bhutan Treaty of Friendship 1949 Guided external relations; the northern buffer
Nepal Treaty of Peace and Friendship 1950 An open border and a special relationship
China Panchsheel 1954 Friendship undone by the boundary dispute
Pakistan Indus Waters Treaty 1960 Cooperation over water amid conflict over Kashmir
Sri Lanka Sirimavo-Shastri Pact 1964 Persons of Indian origin across the Palk Strait
Bangladesh Treaty of Friendship 1972 A warm start after the 1971 liberation

Significance: Why the Neighbourhood Remains India's First Circle

From the Founding Treaties to Today's Strategic Frontier

The larger significance of these early relationships is that they laid the permanent grammar of India's regional policy. The treaties of 1949 to 1972 still frame the relations they founded, the durable ones holding and the asymmetric ones straining, and the dilemmas of the large neighbour, how to be both leader and reassurer, remain exactly as the Nehru era found them.

Contemporary linkages keep the neighbourhood at the centre of policy. The Indus Waters Treaty, the open border with Nepal, the Tibet question and the contested northern line are all live issues today, and the principle the era established, that a great power's first responsibility is its own region, underlies every present-day formula for the neighbourhood. The next part turns from the relationships to their hardest expression, the wars and the bomb.

  • India’s neighbourhood was the first and hardest test of its non-aligned foreign policy.
  • The Indus Waters Treaty of 1960 endured because it was narrow, mutual and well-designed.
  • Friendship with China under Panchsheel collapsed over the Aksai Chin and eastern-sector dispute.
  • Founding treaties with Nepal, Bhutan, Sri Lanka and Bangladesh framed the rest of the ring.
  • The asymmetry between India and its neighbours is the permanent fact of its regional policy.

Prelims MCQ practice

Each question below tests one specific concept on the topic. Click to reveal the answer and a full option-wise explanation.

Q1. The India-Pakistan Indus Waters Treaty of 1960 was brokered by which of the following?

  1. The United Nations
  2. The World Bank
  3. The Non-Aligned Movement
  4. The Commonwealth
Show answer and explanation

Answer: The World Bank

Explanation.

Option (b) is correct. The long dispute over the sharing of the Indus river waters was resolved through the mediation of the World Bank, and the Indus Waters Treaty was signed by Nehru and General Ayub Khan in 1960. Hence option (b).

Q2. Consider the following statements about the early India-China relationship:

  1. India was among the first countries to recognise the communist government of China after 1949.
  2. China annexed Tibet in 1950, removing a buffer between the two countries.
  3. The Dalai Lama was granted asylum in India in 1959.

Which of the statements given above are correct?

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3
Show answer and explanation

Answer: 1, 2 and 3

Explanation.

All three statements are correct. India recognised communist China early, China annexed Tibet in 1950, and the Dalai Lama was granted asylum in India in 1959. Hence option (d).

Q3. The Sirimavo-Shastri Pact of 1964 between India and Ceylon dealt primarily with which of the following?

  1. The sharing of the waters of the Kelani river
  2. The status of persons of Indian origin in Ceylon
  3. The maritime boundary in the Palk Strait
  4. Fishing rights in the Gulf of Mannar
Show answer and explanation

Answer: The status of persons of Indian origin in Ceylon

Explanation.

Option (b) is correct. The Sirimavo-Shastri Pact of 1964 was an agreement on persons of Indian origin in Ceylon, providing for citizenship and repatriation. Hence option (b).

Q4. Consider the following pairs of a neighbour and its founding treaty or pact with India:

  1. Nepal: Treaty of Peace and Friendship, 1950
  2. Bhutan: Treaty of Friendship, 1949
  3. Bangladesh: Treaty of Friendship, Cooperation and Peace, 1972

Which of the pairs given above are correctly matched?

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3
Show answer and explanation

Answer: 1, 2 and 3

Explanation.

All three pairs are correct: the India-Nepal Treaty of Peace and Friendship was signed in 1950, the India-Bhutan Treaty of Friendship in 1949, and the India-Bangladesh Treaty of Friendship, Cooperation and Peace in 1972. Hence option (d).

Q5. Under the Treaty of Friendship of 1949, Bhutan agreed to which of the following?

  1. Merge with the Indian Union
  2. Be guided by India's advice in its external relations
  3. Cede the Chumbi valley to India
  4. Maintain a joint army with India
Show answer and explanation

Answer: Be guided by India's advice in its external relations

Explanation.

Option (b) is correct. Under the 1949 treaty India undertook not to interfere in Bhutan's internal administration, while Bhutan agreed to be guided by India's advice in the conduct of its external relations. Hence option (b).

Q6. Consider the following statements about the early India-Pakistan relationship:

  1. The dispute over Kashmir began in 1947 and was referred to the United Nations.
  2. The two governments cooperated to restore women abducted during Partition.
  3. The Indus Waters Treaty has broken down in every subsequent conflict.

Which of the statements given above is/are correct?

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3
Show answer and explanation

Answer: 1 and 2 only

Explanation.

Statements 1 and 2 are correct: the Kashmir dispute began in 1947 and went to the United Nations, and the two governments cooperated over abducted women. Statement 3 is wrong, because the Indus Waters Treaty has in fact held through every later conflict. Hence option (a).

Sources and Further Reading

Editorial Disclaimer

This article is prepared for UPSC examination preparation. Verify key facts and interpretations against standard reference histories before relying on them.