Bargaining, Misperception, and Conflict: Korean War, Suicide Terrorism, & Madman Theory

States & non-state actors are assumed to be strategic, utility-maximising players.
- War erupts when actors fail to locate an overlapping bargaining space that each prefers to costly fighting.
Main obstacles to peaceful bargains (recurring through the lecture):
- Private Information & Misperception
- Actors hold hidden or inaccurate beliefs about each other’s capabilities or resolve.
- Credibility / Commitment Problems
- Even accurate statements of intent may be discounted if the sender lacks a proven reputation or cannot tie hands.
- Communication Errors
- Warnings, signals, or threats may be ignored, misread, or assumed to be bluffs.

U.S. decision: intervene on behalf of the nascent South-Korean regime under a UN flag.
Result: American & UN forces are rapidly pushed into the south-eastern Pusan Perimeter.
Early assessment inside Washington: conflict can be stabilised and quickly won due to presumed U.S. material superiority.

15 Sep 1950 – Incheon amphibious landing successfully flanks North-Korean forces → swift UN advance northward.
Momentum breeds overconfidence; MacArthur’s forces cross the $38^{th}$ Parallel, approaching the Chinese border.

Despite repeated Chinese warnings, U.S. policymakers dismiss the possibility of large-scale PRC entry.
- Famous U.S. official line (Sept 1950): “They wouldn’t… they would never do it.”
Reality: $300{,}000$ PLA troops cross the Yalu River by late Nov 1950, launching massive counter-offensives.
UN forces are driven back south of the $38^{th}$ Parallel. From July 1951 → July 1953 (armistice) front lines barely move.

Private Information
- U.S. underestimated actual Chinese capability (size, speed of deployment, willingness to incur costs).
Credibility Deficit / Signalling Failure
- Mao’s repeated threats lacked weight; reputation of “bluffing” → U.S. discounted warnings.
Combined effect: miscalculated escalation led both sides into an unwanted, immensely costly war.

Appears irrational: attacker dies, group sacrifices scarce manpower, often triggers harsh state retaliation.

Cheap but High-Impact Signal of Resolve
- Acts as a “smart bomb” that poor non-state actors can afford.
- Demonstrates willingness to pay the ultimate cost, so threats of retaliation lose deterrent value.
Enhances Bargaining Power
- Breaching strong societal taboos increases credibility of future violence.
- Generates fear that further suicide strikes will follow → governments face higher expected costs if they refuse concessions.
Best Option for Politically Excluded Actors
- Groups barred from normal political channels can only alter pay-offs through violence; suicide tactics shift the goalposts of negotiation without needing battlefield victory.

Although tactically self-destructive, suicide terrorism can be strategically rational by changing information & incentive structures between terrorists and states.

January 1969: President Richard Nixon believes that acting irrational—threatening disproportionate nuclear force—will frighten North Vietnam into capitulation.

Threats Alone ≠ Credible
- Need observable costly signals or linked behaviour; mere rhetoric can be dismissed as bluff.
Reputation Costs
- Grandiose nuclear threats inflate the bar for demonstrating seriousness; failure to follow through erodes credibility.
Information Noise
- Over-dramatic threats muddy signals; opponents may ignore or discount them (exact Vietnamese response).
Result: Madman gambit failed; illustrates limits of intimidation unbacked by consistent, costly action.

Two-Level Games (Putnam): leaders must secure domestic approval and strike international deals.
- Democracies face electoral constraints → incentives to avoid unpopular wars.
- Mutual democratic dyads share information more transparently, easing credible compromise.

Faster, denser information flows reduce misperception lag.
International institutions, norms, & monitoring bodies facilitate verification, lowering fear of cheating.

If the economic/bargaining framework is right, growing democratisation + improved communication "hastens a peaceful future" by mitigating private-information and credibility failures that historically caused conflicts like Korea, incentivised suicide terrorism, or encouraged futile madman threats.