Chain-ganging

Chain-ganging is a concept in alliance theory describing how members of a multipolar alliance can be pulled into conflicts they would otherwise avoid because the survival of each ally is seen as essential to the survival of the bloc. The term was popularized by Thomas Christensen and Jack Snyder in their 1990 International Organization article "Chain Gangs and Passed Bucks: Predicting Alliance Patterns in Multipolarity," which built on Kenneth Waltz's structural realism.

Christensen and Snyder argued that when offensive military technology is perceived to dominate, states fear that losing an ally shifts the balance decisively, so they tie their fate to that ally unconditionally. The classic illustration is the July Crisis of 1914, when Austria-Hungary's ultimatum to Serbia drew in Germany, then Russia, France, and Britain through interlocking commitments. Conversely, when defense is perceived to dominate, states are more likely to buck-pass — hoping another power will bear the costs of containing a rising threat, as arguably occurred in the 1930s vis-à-vis Nazi Germany.

Key features of chain-ganging include:

• Tight, unconditional alliances rather than flexible coalitions.
• Perceived offensive advantage, making any ally's defeat seem catastrophic.
• Loss of control over escalation, since the reckless ally sets the pace.
• A multipolar structural setting; the dynamic is generally considered weaker under bipolarity or unipolarity.

The concept remains influential in debates over NATO enlargement, U.S. commitments to Taiwan and the Baltic states, and the risks of "entrapment" — a related but distinct idea associated with Glenn Snyder's alliance security dilemma (1984), which contrasts entrapment with abandonment. Critics note that chain-ganging assumes leaders cannot credibly restrain partners, an assumption that empirical work on alliance management has sometimes challenged. Nonetheless, it remains a standard analytical lens for assessing how alliance design shapes the probability of great-power war.