By name: alliance-building-diplomacy description: "Use when building multi-state coalitions or diplomatic alliances against a dominant threat. Applies Su Qin's 合纵 strategy — analyzing each party's geography, military strength, and fears, then proposing concrete mutual defense terms with specific obligations per member."
Alliance-Building Diplomacy (from Su Qin's strategies)
Overview
A systematic approach to building coalitions by understanding each party's unique position and motivations.
Steps
1. Analyze Each Party's Situation
- Geographic position and vulnerabilities
- Military strength and resources
- Existing relationships and conflicts
- Economic interests
2. Identify the Common Threat
- Define the shared danger clearly
- Explain how each party is individually vulnerable
3. Address Specific Interests Per Party
For weaker states:
- Emphasize protection through collective strength
- Show how isolation leads to conquest
For stronger states:
- Appeal to ambition and leadership role
- Show how alliance enhances their position
For states with geographic barriers:
- Acknowledge their natural defenses
- Explain why these are insufficient alone
4. Propose Concrete Mutual Defense Terms
- Define specific obligations for each member
- Example: "If Qin attacks Chu, Qi and Wei send troops; Han cuts supply lines; Zhao crosses the river"
- Create clear consequences for non-compliance
5. Formalize the Alliance
- Gather leaders or representatives
- Conduct ceremonial oath-taking
- Exchange hostages or guarantees
Key Insight
"诸侯之地五倍於秦，料度诸侯之卒十倍於秦，六国为一，并力西乡而攻秦，秦必破矣" - Combined strength of six states is five times Qin's territory and ten times its soldiers.
Expected Outcome
A functioning coalition with clear mutual obligations and shared purpose.
Validation
- Verify each member's specific obligations are concrete and actionable (e.g., "Qi and Wei send troops; Han cuts supply lines") — vague pledges collapse under pressure
- Confirm the combined strength assessment is realistic (诸侯之地五倍於秦) — inflated projections breed false confidence
- Check that the alliance formalization includes enforcement mechanisms (hostage exchanges, consequences for non-compliance) beyond ceremonial oaths