"Washington would walk away from the talks and resume its military campaign unless the stockpile issue was included in the initial deal" [military campaign]
The explicit threat to resume military operations directly names the coercive mechanism — kinetic force as a negotiating lever — that produced Iran's concession on enriched uranium surrender.
Reasoning from this article
The article reveals that Iran's initial resistance to including enriched uranium commitments was overcome not through diplomatic persuasion but through a credible military ultimatum. This generalizes to a broader structural dynamic: states with demonstrated willingness and capability to use force can compress the negotiating space of adversaries on nuclear issues in ways that purely sanctions-based pressure cannot. The parallel development of bombing options targeting Isfahan while talks were ongoing reinforces that the military threat was active, not rhetorical.