India-Pakistan Wars (1947–1999)
Instrument of Accession, Tashkent Declaration, Simla Agreement, Line of Control, Kargil — every treaty and date tested in UPSC Prelims.
First Kashmir War (1947–48)
As British paramountcy lapsed on 15 August 1947, Maharaja Hari Singh of Jammu & Kashmir attempted to remain independent. Pakistani-backed Pashtun tribal militias (lashkars) crossed into Kashmir on 22 October 1947. Facing collapse, Hari Singh signed the Instrument of Accession on 26 October 1947, ceding Defence, External Affairs and Communications to India. India airlifted troops to Srinagar on 27 October 1947.
The Instrument of Accession was signed on 26 October 1947 and Indian troops arrived on 27 October 1947. The sequence matters: the accession was legally completed before India deployed troops, giving the intervention legal basis. Also note: Hari Singh was a Hindu ruler of a Muslim-majority state — this is the point of contention Pakistan raised.
Lord Mountbatten accepted the accession with the suggestion of a plebiscite once order was restored. The UN Security Council passed Resolution 47 (1948) calling for a ceasefire and plebiscite — a plebiscite that India never held (because Pakistan did not fulfil precondition of withdrawing its troops first). The ceasefire came into effect on 1 January 1949, supervised by UN observers. The ceasefire line divided Kashmir into Pakistan-controlled (Azad Kashmir + Northern Areas) and India-controlled portions.
Second Kashmir War (1965)
Pakistan launched Operation Gibraltar in August 1965 — infiltrating armed irregulars into Kashmir to trigger an insurrection. When this failed, Pakistan launched Operation Grand Slam (1 September 1965) with conventional armoured forces through Chhamb sector. India retaliated by crossing the international border near Lahore on 6 September 1965.
| Operation | Date | Pakistan | India's Response |
|---|---|---|---|
| Operation Gibraltar | August 1965 | Infiltration into Kashmir | Repulsed by Indian Army |
| Operation Grand Slam | 1 Sep 1965 | Conventional attack Chhamb sector | India crossed LoC near Lahore (6 Sep) |
| Battle of Asal Uttar | 8–10 Sep 1965 | Pakistan's armoured thrust | India destroyed 97 Pakistani tanks; largest tank battle in Asia since WWII |
The war ended with the UN Security Council calling for ceasefire (23 September 1965). PM Lal Bahadur Shastri led India through this crisis. Both sides suffered heavy losses; neither made significant territorial gains. The war exposed Pakistan's miscalculation — India did not capitulate.
Tashkent Declaration (1966)
Soviet Premier Alexei Kosygin brokered peace talks in Tashkent (then USSR, now Uzbekistan). The Tashkent Declaration was signed on 10 January 1966 by Indian PM Lal Bahadur Shastri and Pakistani President Muhammad Ayub Khan. Both sides agreed to withdraw forces to pre-war positions and restore diplomatic relations.
Lal Bahadur Shastri died in Tashkent on 11 January 1966 — the morning after signing the declaration. He is the only Indian PM to die abroad. The cause of death was officially a heart attack; his wife and associates alleged foul play, but no conclusive evidence was found. Gulzarilal Nanda again served as interim PM until Indira Gandhi was elected leader.
Q: Who mediated the Tashkent Declaration of 1966? (a) US President Lyndon Johnson (b) Soviet Premier Alexei Kosygin (c) UN Secretary-General U Thant (d) British PM Harold Wilson
Answer: (b) — The Tashkent Declaration was brokered by Soviet Premier Alexei Kosygin as a demonstration of Soviet influence in South Asia.
Third India-Pakistan War: Birth of Bangladesh (1971)
The 1971 war was the most decisive. Pakistan's military crackdown on East Pakistan (Operation Searchlight, 25–26 March 1971) triggered a massive refugee crisis — approximately 10 million refugees crossed into India. India recognised Bangladesh on 6 December 1971 (formally; India had been providing covert support since April 1971 under the Research and Analysis Wing / RAW, founded 1968).
India launched a full-scale war on 3 December 1971 (after Pakistan pre-emptively struck Indian air bases in the west). On 16 December 1971, Lieutenant-General A.A.K. Niazi signed the Instrument of Surrender in Dhaka — approximately 93,000 Pakistani soldiers surrendered to the Indian Army under Lt. Gen. J.S. Aurora. This is the largest military surrender since World War II.
3-6-16 pattern: War started 3 Dec → India recognised Bangladesh 6 Dec → Pakistan surrendered 16 Dec 1971. Niazi signed Instrument of Surrender to J.S. Aurora. 93,000 PoWs — largest surrender post-WWII.
The Research and Analysis Wing (RAW) was founded on 21 September 1968 by R.N. Kao (first director) on Indira Gandhi's orders, after the 1962 and 1965 intelligence failures. It played a crucial role in training the Mukti Bahini in 1971. This date is tested — RAW was NOT founded in 1971 in response to the war.
Simla Agreement (1972)
The Simla Agreement was signed on 2 July 1972 between Indian PM Indira Gandhi and Pakistani PM Zulfikar Ali Bhutto in Shimla. Key provisions:
- The ceasefire line of 17 December 1971 became the Line of Control (LoC)
- Both sides agreed to resolve disputes bilaterally (effectively sidelining the UN)
- Pakistan agreed not to seek third-party intervention on Kashmir
- India agreed to return 93,000 Pakistani PoWs
The Line of Control (LoC) between India and Pakistan in Kashmir was created/formalised by the Simla Agreement 1972. Before 1972, it was the "Ceasefire Line" (established 1949). The LoC is NOT internationally recognised as an international border — it is a ceasefire line. The Line of Actual Control (LAC) is the India-China boundary, entirely different.
Q: The Simla Agreement of 1972 was signed between (a) India and China (b) India and Pakistan (c) India and Bangladesh (d) Pakistan and Bangladesh
Answer: (b) — The Simla Agreement (2 July 1972) was between Indian PM Indira Gandhi and Pakistani PM Zulfikar Ali Bhutto, establishing the Line of Control and providing for bilateral resolution of disputes.
Kargil War (1999)
Pakistani soldiers and militants occupied strategic heights in the Kargil district of Ladakh in the winter of 1998–99. The intrusion was discovered in May 1999 by Indian troops and shepherds. India launched Operation Vijay (military) and Operation Safed Sagar (air force). By 26 July 1999 (now "Kargil Vijay Diwas"), India had recaptured most of the occupied peaks.
| War | Year | Key Treaty/Agreement | Mediator |
|---|---|---|---|
| First Kashmir War | 1947–49 | UN Ceasefire (1 Jan 1949); Karachi Agreement 1949 | UN |
| 1965 War | 1965 | Tashkent Declaration (10 Jan 1966) | USSR (Kosygin) |
| 1971 War | 1971 | Simla Agreement (2 Jul 1972) | Bilateral |
| Kargil War | 1999 | Pakistan withdrawal (no formal treaty) | USA (Clinton pressured Pakistan) |