Bargaining Model of War
1) Private Information and Incentives to Misrepresent
Within the Bargaining Model of War, private information and the incentives to misrepresent it form one of the central explanations for why wars occur despite their immense costs. This framework, most prominently associated with James Fearon, begins from the assumption that war is inefficient compared to negotiated settlements. If both sides had perfect information about each other’s capabilities and resolve, they would typically reach a bargain that avoids the destruction of conflict. However, the presence of private information disrupts this logic.
Private information refers to the fact that states possess knowledge about their own military strength, strategic capabilities, and willingness to endure costs that is not fully observable to their opponents. This asymmetry creates uncertainty, making it difficult for each side to accurately assess the balance of power or the likely outcome of a conflict. As a result, both parties may form overly optimistic expectations about their chances of victory.
The problem is compounded by the incentives to misrepresent information. States have strong strategic reasons to exaggerate their strength or conceal their weaknesses in order to extract more favourable terms in bargaining. By projecting confidence and capability, a state may hope to coerce its opponent into making concessions without resorting to war. However, this deliberate misrepresentation undermines the credibility of signals exchanged during negotiations.
Credibility becomes a central issue in this context. Even when a state attempts to communicate truthful information, its adversary may doubt the sincerity of the message, assuming it to be part of a strategic bluff. This leads to a breakdown in communication, where signals fail to convey reliable information about intentions or capabilities. Without credible signals, bargaining becomes unstable and prone to collapse.
The inability to verify claims further intensifies the risk of conflict. In many cases, there are no impartial mechanisms through which states can independently confirm each other’s assertions. This absence of verification makes it difficult to distinguish between genuine strength and strategic posturing, increasing the likelihood that miscalculations will occur.
As misperceptions accumulate, both sides may come to believe that war is preferable to compromise. If each state overestimates its probability of success, the bargaining range—within which a peaceful settlement is possible—may effectively disappear. In such scenarios, war emerges not as a rational choice in itself, but as the unintended consequence of informational failures.
Historical cases often illustrate this dynamic, where leaders enter conflicts under the mistaken belief that victory will be swift or certain. These misjudgements frequently stem from flawed intelligence, overconfidence, or deliberate deception, all of which are rooted in the problem of private information.
Private information and incentives to misrepresent highlight a fundamental limitation of bargaining under anarchy. They demonstrate that even rational actors can fail to reach peaceful agreements when information is imperfect and trust is lacking. In the Bargaining Model of War, conflict is thus understood not as inevitable, but as a tragic outcome of uncertainty and strategic deception.
2) The First-Strike Advantage
The first-strike advantage is a crucial mechanism within the Bargaining Model of War that explains how incentives for pre-emptive action can lead to conflict. Building on the broader framework associated with James Fearon, this concept refers to situations in which launching an attack first provides a significant military or strategic benefit. When such advantages exist, states may feel compelled to act quickly rather than risk being struck first by their opponent.
At the heart of the first-strike problem is the issue of vulnerability. If a state believes that its military forces, infrastructure, or strategic assets could be severely weakened by an initial enemy attack, it faces strong pressure to strike pre-emptively. Waiting becomes dangerous, as inaction may lead to a decisive disadvantage. This creates a situation where both sides prefer to attack first, even if neither initially desires war.
This dynamic produces what is often described as a “commitment problem.” Even if both parties would prefer a peaceful settlement, neither can credibly commit to refraining from exploiting the first-strike advantage. Each fears that the other may launch a surprise attack in the future, making present restraint appear irrational. As a result, mutual suspicion drives both sides towards conflict.
The first-strike advantage is particularly pronounced in contexts where military technology favours offence over defence. For instance, when weapons systems are capable of rapidly destroying an opponent’s forces or command structures, the benefits of striking first increase significantly. In such environments, the window for effective retaliation may be so narrow that delaying action becomes highly risky.
Crisis instability often emerges from these conditions. As tensions escalate, both sides may mobilise forces and adopt alert postures, which further heighten the risk of accidental or deliberate escalation. The speed and pressure of decision-making in such crises can reduce opportunities for careful deliberation, increasing the likelihood of miscalculation.
Another important aspect of the first-strike advantage is the role of perception. Even if the actual advantage is limited, the belief that an opponent might benefit from striking first can be enough to trigger pre-emptive behaviour. Thus, it is not only objective military realities but also subjective interpretations that drive the escalation towards war.
Efforts to mitigate the first-strike problem often involve the development of deterrence strategies and confidence-building measures. By ensuring that both sides retain the ability to retaliate effectively after an initial attack, states can reduce the incentive to strike first. However, establishing such stability requires trust and transparency, which are often in short supply during periods of heightened tension.
The first-strike advantage illustrates how the structure of incentives within the international system can make war more likely, even among rational actors. It shows that conflict can arise not from aggressive intent alone, but from the fear of being placed at a strategic disadvantage. In the Bargaining Model of War, this mechanism highlights the fragile balance between deterrence and pre-emption in an anarchic world.
3) Issue Indivisibility
Issue indivisibility is a key explanation within the Bargaining Model of War for why negotiations sometimes fail even when compromise would seem possible in material terms. Developed within the broader framework associated with James Fearon, it refers to situations in which the object of dispute cannot be easily divided or shared between conflicting parties without losing its essential value or meaning.
At the core of issue indivisibility is the idea that not all political or territorial goods are fungible. While some resources, such as money or trade concessions, can be divided and redistributed, other issues—such as sovereignty over a sacred site, control of a capital city, or symbolic national territories—are perceived as “all-or-nothing.” These perceptions make standard bargaining solutions difficult to apply.
When an issue is seen as indivisible, the usual logic of compromise breaks down. Instead of negotiating a middle ground, each side may insist on total control, because partial ownership is either unacceptable or politically meaningless. This transforms what might otherwise be a divisible allocation problem into a zero-sum confrontation, increasing the risk of escalation.
Symbolic and identity-based factors often reinforce indivisibility. Territories or institutions may carry deep historical, religious, or cultural significance, making them resistant to partition. Leaders may also find it politically impossible to accept division, as doing so could be interpreted domestically as betrayal or weakness, further narrowing the space for negotiation.
Importantly, many cases of apparent indivisibility are actually socially constructed rather than objectively fixed. In principle, most goods can be divided in some form, but political narratives and collective beliefs may render such division unacceptable. This suggests that indivisibility is often a product of perception and political framing rather than material constraints alone.
Attempts to overcome indivisibility often involve creative institutional arrangements. Examples include shared sovereignty, rotational governance, international administration, or phased control agreements. These mechanisms aim to preserve the symbolic value of the issue while still enabling some form of practical compromise between parties.
However, such solutions are frequently fragile. Because they rely on trust and ongoing cooperation, they may break down if either side believes the arrangement disadvantages them. Moreover, domestic audiences may reject compromise solutions, reinforcing hardline positions and reducing the durability of agreements.
Issue indivisibility highlights a critical limitation in the bargaining approach to war. It shows that even when rational negotiation is possible in theory, deeply embedded symbolic meanings and political narratives can block compromise in practice. Within the Bargaining Model of War, it therefore represents a pathway through which perception and identity can transform bargaining failures into open conflict.
4) The Coase Theorem in Anarchy
The Coase theorem in anarchy is a foundational point of departure in the Bargaining Model of War, used to explain why war is puzzling from a rational-choice perspective. Drawing on the broader analytical framework associated with James Fearon, the argument begins with the insight that, in principle, rational actors should be able to reach efficient bargains that avoid costly conflict, even in the absence of a central authority.
The classical Coase theorem holds that when property rights are clearly defined, and when bargaining is costless, parties will negotiate to an efficient outcome regardless of the initial distribution of resources. Applied to international relations, this suggests that states should be able to bargain over the distribution of contested goods—such as territory or influence—in a way that avoids war entirely. Even under anarchy, mutually beneficial agreements should theoretically be achievable.
However, the international system lacks key conditions required for the Coase theorem to operate smoothly. Most importantly, bargaining in international politics is neither costless nor perfectly transparent. Negotiations involve strategic communication, uncertainty, enforcement problems, and the ever-present risk of deception. These frictions prevent states from easily reaching efficient outcomes.
Anarchy further complicates the picture by removing any overarching enforcement mechanism. Even if states agree to a settlement, there is no global authority capable of guaranteeing compliance. This raises concerns about commitment: states may fear that agreements will not be honoured once power relations shift, making them reluctant to accept negotiated settlements in the first place.
Distributional conflict also undermines Coasean logic in international relations. Even if war is inefficient in aggregate terms, states care deeply about how the benefits of peace are divided. A settlement that heavily favours one side may be unacceptable to the other, even if both would prefer it to war in purely material terms. Thus, bargaining is not only about avoiding conflict, but about competing for a favourable share of the surplus.
Strategic behaviour further disrupts Coasean bargaining. States may misrepresent their capabilities or intentions to improve their negotiating position, leading to uncertainty and mistrust. This strategic distortion increases transaction costs and can prevent the identification of a mutually acceptable bargaining range.
Additionally, changes in relative power over time introduce further complications. If future shifts in capability are expected, states may prefer war today over a disadvantageous settlement that becomes even worse later. This undermines the assumption of stable property rights over time, which is central to Coasean efficiency.
Applying the Coase theorem to anarchy reveals why war, though inefficient, can still occur in a system of rational states. It demonstrates that the absence of enforcement, combined with uncertainty and distributional conflict, prevents the realisation of efficient bargains. Within the Bargaining Model of War, this insight clarifies that war is not a failure of rationality, but a consequence of structural impediments to efficient bargaining.
5) Risk Propensity and Prospect Theory
Risk propensity and prospect theory provide a behavioural explanation within the Bargaining Model of War for why rational bargaining sometimes breaks down into conflict. Developed in relation to the broader rationalist framework associated with James Fearon, this perspective challenges the assumption that states evaluate outcomes purely in terms of expected utility under stable preferences.
Prospect theory, originally formulated in behavioural economics, suggests that decision-makers evaluate potential outcomes relative to a reference point rather than in absolute terms. Gains and losses are not treated symmetrically: losses tend to weigh more heavily than equivalent gains, leading to what is known as loss aversion. In international politics, this means that states may take disproportionate risks to avoid perceived losses.
A central implication is that risk propensity is not fixed but depends on whether actors perceive themselves to be in the domain of gains or losses. When leaders believe they are ahead or secure, they tend to be risk-averse, preferring stable agreements and avoiding conflict. However, when they perceive themselves as falling behind or suffering losses, they may become risk-seeking, increasing the likelihood of escalation.
This shift in risk attitudes helps explain why states sometimes choose war even when peaceful settlement would be preferable under expected value calculations. If leaders perceive a settlement as locking in losses relative to their reference point, they may prefer the gamble of war, hoping for a better outcome despite the risks involved.
Reference points themselves are often shaped by political, historical, and psychological factors. Past territorial holdings, previous status positions, or domestic expectations can all serve as benchmarks against which current outcomes are judged. This means that identical material conditions can be interpreted very differently depending on how they are framed.
Domestic political pressures can intensify these dynamics. Leaders may adopt riskier foreign policy positions when they fear punishment at home for accepting unfavourable deals. Electoral incentives, nationalist sentiment, or elite competition can all push decision-makers into the “loss domain,” where risk-taking behaviour becomes more likely.
Another important aspect is escalation during crises. As negotiations deteriorate, states may reinterpret their situation as increasingly disadvantageous, shifting from cautious bargaining to high-risk strategies. This can create a self-reinforcing cycle in which each side’s increased risk tolerance heightens the other’s insecurity, accelerating the path toward war.
Risk propensity and prospect theory expand the Bargaining Model of War by incorporating psychological realism into strategic analysis. They show that war can emerge not only from informational problems or commitment failures, but also from systematic biases in how actors perceive gains and losses. In this sense, conflict is shaped as much by perception and framing as by material power or strategic structure.
