Shadmani’s pronouncement is the first official confirmation of Tehran’s purchase of the Russian fighters that has long been suspected to be in the works. Kremlin spokesman Dmitry Peskov declined to comment on the issue.

NICOLE GRAJEWSKI is a Fellow in the Nuclear Policy Program at the Carnegie Endowment for International Peace and an Associate with the Project on Managing the Atom at the Harvard Kennedy School. She is the author of Russia and Iran: Partners in Defiance From Syria to Ukraine.

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