How any drones did Iran give to Russia?
How many can Iran or Russia produce and how soon?
What are available countermeasures?
From two years ago, Here's the New Marine Corps Weapon that Just Destroyed an Iranian Drone. When a Iranian drone got too close to the USS Boxer. It was claimed that the Marines "Light Marine Air Defense Integrated System" LMADIS (say that ten times fast) jammed the drone.
“How any drones did Iran give to Russia?”
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None. Russia is buying these drones and supporting infrastructure.