Why is the ‘polarity of power’ thesis less relevant and meaningful in the present architecture of ‘balance of power’? (2012, 12 Marks)
The polarity thesis, systematised by Kenneth N. Waltz in Theory of International Politics (1979), holds that the number of great powers is the key structural variable explaining alignment, balancing and war. It assumes that power is held by unitary states and can be added up into one ranking. Each assumption has weakened, so a count of poles now describes less and predicts less.
Power no longer adds up to one number
- Joseph S. Nye Jr.’s three-dimensional chessboard: military power is close to unipolar, economic power multipolar, and transnational issues (climate, pandemics, cyber, terrorism) have no polarity at all.
- The same system is thus unipolar in arms (US defence spending of $954 billion in 2025 against China’s $336 billion, SIPRI), near-bipolar at the technology frontier and multipolar in diplomacy. A frame that yields three answers is not measuring one property.
Balancing has changed form
- Nuclear deterrence: a secure second strike lets a modest power deter a far stronger one, so capability ratios matter less at the top.
- Interdependence: Robert O. Keohane and Nye’s complex interdependence binds rivals; the United States and China compete through tariffs, export controls and critical minerals rather than opposed blocs.
- Soft balancing, hedging and minilaterals replace formal alliances. India sits in the Quad, explicitly not an alliance, and in BRICS, whose New Delhi summit (September 2026) criticised unilateral tariffs and sanctions. S. Jaishankar calls this building “convergences and issue-based arrangements” (November 2019).
- Regional balances: Barry Buzan and Ole Wæver’s regional security complexes (2003) show that India–China on the Himalayan frontier or Iran and the Gulf states follow local logics that global polarity barely explains.
Diffusion beyond states
Firms, platforms, militias and terror networks wield consequential power without being poles. Richard N. Haass’s “non-polarity” (2008) and Amitav Acharya’s “multiplex world” (2014) describe orders defined by many actors and regions rather than by a few capitals.
The counter-argument
Polarity has not vanished. John J. Mearsheimer reads US–China rivalry as great-power politics returning, NATO grew to 32 members after Russia invaded Ukraine, and Saudi Arabia, Pakistan and Turkey signed the Mecca Joint Defence Agreement (August 2026), a classic collective-defence pledge. New START’s expiry on 5 February 2026 has also made the strategic balance a matter of raw numbers again.
Conclusion
The thesis loses meaning because it treats power as fungible, state-held and aggregable, and today’s balance is none of these. It still describes the military apex, above all the emerging US–China dyad, but the wider architecture is better read through issue-specific power, interdependence and multi-alignment.