Define Alliance. What is the role of Alliances in power politics? Discuss the relevance of Alliance in a nuclear age. (1992)
In power politics, states seek security through their own arms or by borrowing others’ strength. An alliance is the formal way of borrowing it. The nuclear age asks whether that borrowing still matters once a few states hold weapons of absolute destruction.
Definition
An alliance is a formal agreement between two or more states to cooperate militarily, or to consider using force, in specified contingencies against states outside the membership. Its marks are formality (usually a treaty), military content and a defined casus foederis. George Liska (Nations in Alliance, 1962) noted that alliances are directed against, and only derivatively for, someone or something. It differs from alignment (informal), a coalition (ad hoc) and collective security (universal, against any aggressor).
Role in power politics
- Instrument of the balance of power: for Hans J. Morgenthau, alliances are a necessary function of the balance of power in a multiple-state system, the fastest form of external balancing, as the Triple Entente showed against Germany. Kautilya’s mandala made the same calculation: the neighbour’s neighbour is the natural ally.
- Deterrence and signalling: an alliance warns an aggressor that it will face more than one opponent, and supplies bases and intelligence.
- Balancing threats: Stephen M. Walt (1987) shows that states ally against the most threatening power, not simply the strongest.
- Control and restraint: great powers manage clients through alliances; smaller states use them to bind patrons.
- Costs: Glenn H. Snyder’s dilemma of abandonment and entrapment, and the alliance linkage that turned a Balkan crisis into world war in 1914.
Relevance in a nuclear age
The case that alliances matter less
- A secure second-strike force deters regardless of allies, so added capability counts for little at the top of the ladder.
- Extended deterrence is inherently doubtful. Doubts that America would risk its cities for Europe led Charles de Gaulle to build the force de frappe and leave NATO’s integrated command in 1966.
- The superpowers balanced internally (Kenneth N. Waltz), on their own arsenals.
The case that they matter more
- Extended deterrence became the main product of alliances. The US umbrella keeps Germany, Japan and South Korea non-nuclear, making alliances a pillar of non-proliferation.
- Doubted guarantees must be shown repeatedly, hence NATO’s nuclear sharing, forward deployment and integrated commands, denser than any pre-nuclear alliance.
- Snyder’s stability–instability paradox (1965): conventional and sub-conventional conflict continues under the nuclear ceiling, and allies are still needed for it.
- Evidence: Finland and Sweden abandoned neutrality, taking NATO to 32 members; nuclear-armed Pakistan joined Saudi Arabia and Turkey in the Mecca Joint Defence Agreement (August 2026); and since New START expired on 5 February 2026, the credibility of the US umbrella is debated more, not less.
The Indian experience
Non-aligned India still signed the Indo-Soviet Treaty of 1971 when the United States and China backed Pakistan; that December Washington sent the carrier Enterprise into the Bay of Bengal. The May 1998 tests were a self-help answer to an umbrella India never had. Jaswant Singh (“Against Nuclear Apartheid”, 1998) justified them by national security alone: having chosen nonalignment over Cold War blocs, India had to keep its own nuclear option.
Conclusion
Nuclear weapons did not make alliances obsolete; they changed what alliances are for. Alliances now aggregate credibility rather than divisions, and their central problem is reassuring allies rather than adding up forces. They stay central to power politics, even as India prefers flexible alignment to treaty commitment.