The decision by the Swedish government to return Hamid Nouri, a convicted criminal against humanity, to Iran in exchange for hostages marks a dangerous precedent with far-reaching consequences. This exchange, involving the release of Johan Floders, a Swedish diplomat, and Saeed Azizi, a dual-citizen, underscores Tehran’s mastery in leveraging “hostage diplomacy” to further its agenda. Nouri was convicted for his role in the 1988 massacre of political prisoners, an event that saw thousands executed on the orders of Ayatollah Ruhollah Khomeini.