Discuss the evolution of non-proliferation of nuclear weapons in the post-Cold War Period. (2016, 15 Marks)
Non-proliferation seeks to stop nuclear weapons spreading to new states (horizontal) and, less successfully, existing arsenals growing (vertical). In the Cold War it rested on the NPT bargain and superpower discipline over clients. After 1991 the regime was consolidated, shaken, patched with coercive tools, and has eroded since 2018.
Phase 1: Consolidation, 1991–1997
- Soviet successor states: under the Lisbon Protocol (1992) Ukraine, Kazakhstan and Belarus joined the NPT as non-weapon states for the Budapest Memorandum (1994) assurances, while Nunn–Lugar funds secured material and paid scientists.
- Rollback: South Africa dismantled six devices and joined in 1991; Argentina and Brazil built joint inspections (ABACC, 1991) and acceded in 1995 and 1998. France and China joined in 1992.
- Regime building: the NPT was extended indefinitely in 1995; the CTBT opened in 1996 but is not in force: nine of the 44 required states are outstanding, and Russia de-ratified in 2023.
- Verification: Iraq’s secret programme, uncovered after the Gulf War despite inspections of its declared sites, produced the Additional Protocol (1997), in force for 141 states by 2023.
Phase 2: Shocks and counter-proliferation, 1998–2006
India’s and Pakistan’s tests (May 1998), North Korea’s exit (2003) and test (2006), and the A. Q. Khan network showed treaties could not stop determined states or private suppliers. The response turned coercive: the Proliferation Security Initiative (2003), UNSC Resolution 1540 (2004) against non-state actors, preventive war in Iraq (2003), and Libya’s verified renunciation that December.
Phase 3: Accommodation and diplomacy, 2005–2017
The NSG waiver for India (2008) recognised a responsible non-NPT state. The Nuclear Security Summits (2010–16) secured material; New START (2010) and the JCPOA (2015) showed verified bargains still worked; the TPNW (2017) voiced the frustrated majority.
Phase 4: Erosion, 2018–2026
- The US left the JCPOA (2018); the IAEA Board found Iran non-compliant (12 June 2025); Israeli and American strikes followed, UN sanctions returned, and a US–Israeli war began on 28 February 2026.
- New START expired on 5 February 2026; the 2026 NPT Review Conference failed, the third time running. China’s arsenal has roughly doubled since 2020.
- AUKUS (2021) relies on the safeguards exemption for naval reactor fuel, a precedent critics fear others will cite, and allies in Asia and Europe now openly debate independent or shared deterrents.
Assessment
- Horizontally the regime largely succeeded: three new possessors against John F. Kennedy’s 1963 fear of up to twenty-five.
- Scott D. Sagan’s three models explain the cases: security drove Pakistan and North Korea, domestic politics South Africa’s rollback, and status shaped India’s choice.
- Indian critics frame it as discriminatory: Jaswant Singh called it “nuclear apartheid” (Foreign Affairs, 1998), and K. Subrahmanyam argued that indefinite extension froze inequality.
Conclusion
Non-proliferation has moved from a universal treaty bargain to a patchwork of coalitions, country-specific exceptions and occasional force. It has slowed new entrants, but without reciprocal disarmament it is losing the legitimacy on which compliance depends.