Lecture 4 Review Flashcards

Fundamentals of War in International Relations

• Definition of War:

  • War is formally defined as an event involving the organized use of military force by at least two parties that reaches a minimum threshold of severity.

  • The standard quantitative threshold used in International Relations (IR) scholarship is a minimum of $1\,000$ battle-related deaths.

• Categorization of War:

  • Interstate War: A military conflict in which the primary participants are sovereign states.

  • Civil War: A military conflict in which the primary fighting actors exist within the same sovereign state.

• Historical Frequency and Prevalence of War:

  • International Relations scholarship actively analyzes historical data measuring the percentage of sovereign states involved in military conflict over time from 1820 to 2010.

  • Historical data demonstrates significant fluctuations and spikes in war involvement, notably during major system-wide conflicts such as the mid-nineteenth century, World War I, and World War II, followed by periods of relative decline in state-on-state involvement percentage.

The Human and Financial Costs of War

• Human Destruction and Loss of Life:

  • Although war is statistically rare relative to peaceful diplomatic interactions, it is extraordinarily destructive to human life and societal infrastructure.

  • Interstate wars during the twentieth century alone produced approximately $40\,000\,000$ combat-related deaths.

  • Beyond military casualties, warfare inflicts severe collateral damage on civilian populations, producing millions of civilian deaths and creating vast international refugee populations.

  • World War I Casualties:

  • Military deaths: $9\,000\,000$ soldiers.

  • Civilian deaths: $12\,000\,000$ civilians.

  • World War II Casualties:

  • Military deaths: $15\,000\,000$ troops.

  • Civilian deaths: $45\,000\,000$ civilians.

  • Comparative Scale: To contextualize these figures, the total civilian population of Austin, Texas is approximately $1\,000\,000$ people.

• United States Financial Expenditures Across Major Wars:

  • United States military operational expenditures by major conflict, expressed in inflation-adjusted 2024 US dollars (excluding costs for veterans' benefits, interest on war debt, or foreign aid):

  • World War I: $\\text{\$466.9 Billion}$

  • World War II: $\\text{\$5.7 Trillion}$

  • Korean War: $\\text{\$476.7 Billion}$

  • Vietnam War: $\\text{\$1 Trillion}$

  • Post-9/11 Iraq and Afghanistan Wars: $\\text{\$3.6 Trillion}$

  • Institutional Budget Reference: The annual operating budget of the University of Texas is approximately $\\text{\$4 Billion}$.

• Case Study on Contemporary Emergency Expenditures:

  • Defense Secretary Pete Hegseth estimated that war operations involving Iran reached a cost of $\\text{\$37.5 Billion}$ after nearly five months of active conflict.

  • Defense Secretary Pete Hegseth submitted an emergency military spending request of up to $\\text{\$70 Billion}$ to address what was termed new operational realities.

• Global Military Spending Trends:

  • Worldwide defense spending has almost doubled since the early 1990s.

  • Global military expenditures in billions of constant 2022 US dollars (according to SIPRI datasets covering defense equipment, personnel, operations, and maintenance):

  • 1993: $\\text{\$1\,281.1 Billion}$

  • 2003: $\\text{\$1\,411.3 Billion}$

  • 2013: $\\text{\$1\,892.8 Billion}$

  • 2023: $\\text{\$2\,393.6 Billion}$

  • Regional expenditure distribution includes active spending growth across the Americas, Asia & Oceania, Europe, and Africa & Middle East.

• Visualizing Currency Scale:

  • To understand the enormity of military expenditures, a physical stack of $\\text{\$1 Trillion}$ in currency pallets dwarfs standard commercial freight vehicles.

Objects of Dispute: What States Fight Over

• Categorization of Disputed Goods:

  • States go to war to obtain scarce resources or political outcomes that they value, broadly classified into three categories:

  • Territory: The most frequent object of military dispute between states due to land value, natural resources, strategic geography, or historical/ethnic ties.

  • Policies: Disputes where one state seeks to alter or eliminate another state's internal or external actions (e.g., nuclear capability development, state support of proxy groups, economic barriers).

  • Regime Change: Direct military interventions intended to remove existing political leadership or restructure another state's system of governance.

• Historical and Contemporary Examples of Conflicting State Interests:

  • Russia-Ukraine War:

  • Conflicting interests over territorial sovereignty in Eastern Ukraine (Donbas, Pokrovsk, Kharkiv, Kherson), the status of Crimea (annexed by Russia in 2014), and Ukraine's potential NATO accession.

• United States vs. Iran / Iraq:

  • Disputes surrounding nuclear non-proliferation policies, state-sponsored terrorism, regional oil security, and military control over critical maritime transit choke points such as the Strait of Hormuz.

• Korean War and Vietnam War:

  • Conflict centered on state sovereignty, ideological expansion, and the United States foreign policy of containing global communism.

• World War I and World War II:

  • Global struggles focused on geopolitical dominance, territorial control over continental Europe, and state sovereignty.

Evaluating Common Explanations for War

• Critique of Explanation #1: Conflicting Interests

  • Proposed Hypothesis: War occurs simply because states have incompatible or conflicting interests.

  • Analytical Flaw: States constantly experience deeply conflicting interests regarding trade, boundaries, environment, and diplomacy without resorting to armed conflict. Conflicting interests are a necessary condition for war, but not a sufficient explanation for why disputes escalate to military violence.

• Critique of Explanation #2: Simple Cost-Benefit Analysis

  • Proposed Hypothesis: States fight wars whenever the expected benefit of war exceeds its expected financial and physical costs.

  • Formal Cost-Benefit Framework:

  • Let $x$ represent the total value of the disputed good.

  • Let $p$ represent State A's probability of winning the war (where $0 \le p \le 1$).

  • Let $c$ represent the total costs incurred by State A in fighting the war.

  • Expected Utility of War for State A:       $\text{Expected Value} = p \times x - c$

  • Under this model, State A initiates war if:       $p \times x > c$

  • Numerical Illustration 1 (Positive Expected Payoff):

  • Value of disputed territory $x = \\text{\$10 Billion}$.

  • State A probability of winning $p = 0.90$ (90% chance).

  • State A cost of war $c = \\text{\$2 Billion}$.

  • Calculated expected value from war:       0.90 \times \\text{\10 Billion} - \\text{\2 Billion} = \\text{\$7 Billion}

  • Because \\text{\7 Billion} > \\text{\0}, the simple cost-benefit rule predicts State A will choose war.

  • Numerical Illustration 2 (Negative Expected Payoff):

  • Value of disputed territory $x = \\text{\$10 Billion}$.

  • State A probability of winning $p = 0.90$.

  • State A cost of war increased to $c = \\text{\$20 Billion}$.

  • Calculated expected value from war:       0.90 \times \\text{\10 Billion} - \\text{\20 Billion} = -\\text{\$11 Billion}

  • Because the net outcome is negative, war is rejected.

  • Analytical Flaw: This model overlooks peaceful negotiated alternatives. Even if war offers a positive expected return, rational states must evaluate whether negotiations can deliver an equal or greater division of the good without incurring war costs c$.\n\n# Crisis Bargaining and Rationalist Explanations for War\n\n- Foundations of Rationalist Theory:\n - Developed prominently by Stanford University political scientist James D. Fearon.\n - Landmark publication: * Rationalist explanations for war *, published in *International Organization*, Vol. 49, No. 3 (1995), pp. 379–414 (over 6,800 academic citations).\n - Other key scholarly works by Fearon include *Domestic political audiences and the escalation of international disputes* (1994) and *Ethnicity, insurgency, and civil war* (2003).\n\n\n\n- Concept of Crisis Bargaining:\n - Crisis bargaining is defined as a bargaining interaction in which at least one state threatens the use of military force if its demands are not met.\n - In international relations, war serves as an outside option—a costly backstop option that actors can exercise if peaceful negotiations fail.\n\n- Formal Model of the Bargaining Range:\n - Disputed territory or good is represented as a continuum between 0$and$1$, where State A's ideal outcome is$1$(all territory to A) and State B's ideal outcome is$0 (all territory to B).\n - Let p$be the probability of State A winning a war, meaning State B wins with probability$1 - p$.

  • Winning state captures the entire good ($v = 1$), while the loser gets nothing ($0$).

  • War costs: State A incurs cost $a$, and State B incurs cost $b$.

  • Expected Payoff of War to State A:     $\text{Expected Utility}_A = p \times v + (1 - p) \times 0 - a = p - a$

  • Expected Payoff of War to State B:     $\text{Expected Utility}_B = (1 - p) \times v + p \times 0 - b = 1 - p - b$

  • State B's reservation value means State B will only accept peaceful deals where it receives at least $1 - p - b$, leaving State A with at most p + b$.\n - Bargaining Range Definition:\n - The bargaining range is the set of peaceful settlements x that both states prefer over fighting war:\n      [p - a, p + b]\n - Any division of the good x$lying within the range$p - a \le x \le p + b makes both states strictly better off than going to war.\n - Total size of the bargaining range is:\n      (p + b) - (p - a) = a + b\n - Because war costs a > 0$and$b > 0, the bargaining range is always positive.\n\n\n\n- Concrete Numerical Proof of War's Inefficiency:\n - State A and State B dispute a territory worth \ ext{\$10 Billion}.\n - State A has a 60\%$chance of victory ($p = 0.60$); State B has a$40\%$chance of victory ($1 - p = 0.40).\n - Fighting the war costs State A \ ext{\$1 Billion}$($a = 1$) and costs State B$\ ext{\$2 Billion}$($b = 2).\n - State A expected war payoff:\n    \ ext{\10 Billion} \times 0.60 + \ ext{\0} \times 0.40 - \ ext{\$1 Billion} = \ ext{\$5 Billion}\n - State B expected war payoff:\n    \ ext{\10 Billion} \times 0.40 + \ ext{\0} \times 0.40 - \ ext{\$2 Billion} = \ ext{\$2 Billion}\n - Peaceful Reservation Values:\n - State A requires a minimum of \ ext{\$5 Billion} in territory to choose peace over war.\n - State B requires a minimum of \ ext{\$2 Billion} in territory to choose peace over war.\n - Satisfying Both Demands Peacefully:\n - Combined minimal demands of both states: \ ext{\$5 Billion} + \ ext{\$2 Billion} = \ ext{\$7 Billion}.\n - Total value of the disputed good: \ ext{\$10 Billion}.\n - Surplus available to split via peaceful settlement: \ ext{\$10 Billion} - \ ext{\$7 Billion} = \ ext{\$3 Billion}.\n - This \ ext{\$3 Billion}$surplus exactly equals the combined destroyed resources of war ($a + b = \ ext{\$1 Billion} + \ ext{\$2 Billion} = \ ext{\$3 Billion}$$).

  • Core Conclusion:

  • War is ex-post inefficient. Because war consumes resources and destroys value, there always exists a set of bargained agreements that both states prefer to war.

The Central Puzzle of War and Mechanisms of Bargaining Failure

• The Core Theoretical Question:

  • If a mutually beneficial bargaining range always exists, why do rational states fail to reach peaceful agreements and instead fight wars?

• Three Rationalist Mechanisms for Bargaining Failure (Fearon's Framework):

  • Information Problems (Asymmetric Information with Incentives to Misrepresent):

  • States possess private information regarding their military strength, strategy, weapons technology, or resolve, and have strategic incentives to misrepresent or exaggerate this strength to extract better terms during negotiations, leading to miscalculation.

  • Commitment Problems:

  • Agreements reached today may not be credible in the future when shifts in power occur. A state expecting to grow weaker may launch a preventive war, or an actor with a first-strike advantage may initiate a preemptive war because promises to respect a peaceful deal cannot be credibly guaranteed.

  • Issue Indivisibilities:

  • Disputed goods that cannot be physically or politically divided into smaller pieces without losing their core value (such as sacred religious sites, indivisible territories, or absolute political crowns) eliminate intermediate bargaining points across the continuum.