This article examines the effectiveness of coercive diplomacy in humanitarian interventions in the post–Cold War international system. As intra-state conflicts increasingly involve systematic violence against civilian populations, the international community has turned to coercive strategies—such as air campaigns, no-fly zones, and peace enforcement missions—to compel actors to halt atrocities without engaging in full-scale war. However, the use of coercive diplomacy raises significant legal, political, and ethical debates regarding sovereignty, legitimacy, and selectivity in intervention decisions. Using a comparative case-study approach, this study analyzes three prominent humanitarian interventions: Kosovo (1999), East Timor (1999), and Libya (2011). Through qualitative process tracing supported by selected quantitative indicators, including civilian casualty trends, displacement patterns, and post-conflict stability measures, the research evaluates both immediate humanitarian outcomes and long-term political consequences. The findings suggest that coercive diplomacy can effectively compel short-term behavioral change and reduce immediate violence against civilians. However, its long-term success depends heavily on institutional factors, particularly multilateral legal authorization, credible enforcement capacity, and sustained post-conflict governance engagement. Cases where coercive intervention was integrated with long-term international administration and reconstruction efforts produced more stable outcomes, while interventions lacking robust post-conflict planning resulted in prolonged instability. The study concludes that coercive diplomacy is most effective when embedded within a broader multilateral framework linking civilian protection, legal legitimacy, and post-conflict state-building.
Turf Jessica (Sun,) studied this question.