Foreign policy: non-alignment to strategic autonomy
India's foreign policy from Nehru's non-alignment through the Cold War tilt to post-1991 strategic autonomy, with high-yield doctrines, dates and PYQ angles.
The architecture Nehru built
India's foreign policy was authored largely by Jawaharlal Nehru, who held the External Affairs portfolio from 1947 until his death in 1964. Its constitutional anchor is Article 51 of the Directive Principles, which directs the state to promote international peace, respect for international law and treaty obligations, and settlement of disputes by arbitration. The operative doctrine was non-alignment — not neutrality or isolation, but the freedom to judge each issue on its merits rather than through the binary of the US-led and Soviet-led blocs.
The intellectual scaffolding was the Panchsheel (Five Principles of Peaceful Coexistence), formally enunciated in the preamble to the Sino-Indian Agreement on Trade between Tibet and India, signed 29 April 1954: mutual respect for sovereignty and territorial integrity, mutual non-aggression, non-interference in internal affairs, equality and mutual benefit, and peaceful coexistence. Nehru, Zhou Enlai and U Nu jointly affirmed these in June 1954.
Institutionalising the movement
Non-alignment moved from idea to organised bloc through a sequence of conferences. The Asian Relations Conference (New Delhi, March–April 1947) and the Bandung Conference (April 1955), where Nehru shared the stage with Sukarno, Nasser, Zhou Enlai and Tito, established Afro-Asian solidarity and the Bandung Ten Principles. The Non-Aligned Movement (NAM) was formally founded at the First Belgrade Summit in September 1961, with Nehru, Tito (Yugoslavia), Nasser (Egypt), Sukarno (Indonesia) and Nkrumah (Ghana) as its principal architects.
The first reckonings
The idealist phase met hard limits. India recognised the People's Republic of China early (1950) and championed its UN seat, yet the Sino-Indian War of October–November 1962 shattered the 'Hindi-Chini Bhai-Bhai' premise, exposed military unpreparedness, and forced India to seek emergency Western arms. The Indus Waters Treaty of 19 September 1960, brokered by the World Bank and signed by Nehru and Ayub Khan, remains a durable instance of pragmatic dispute settlement that has survived three wars.
Under Lal Bahadur Shastri the 1965 war with Pakistan ended in the Soviet-mediated Tashkent Declaration (10 January 1966). Indira Gandhi then pivoted decisively: facing US 'tilt' toward Pakistan and the despatch of the carrier USS Enterprise to the Bay of Bengal, India signed the Treaty of Peace, Friendship and Cooperation with the USSR on 9 August 1971, providing strategic cover for the Bangladesh Liberation War. Victory produced the Shimla Agreement of 2 July 1972, which committed both states to resolve disputes bilaterally and converted the ceasefire line into the Line of Control. India's first nuclear test, Pokhran-I ('Smiling Buddha'), followed on 18 May 1974.