Russia's Iranian-made drones cost as little as $20,000, but can cost much more to shoot down.
Ukraine launched multiple costly missiles over New Year to deal with Russia's drones, NYT reported.
While the Shahed-136 drones being deployed by Russia cost as little as $20,000 to make, shooting one out of the sky can cost between $140,000-$500,000, the paper reported.
"Shooting $4 million missiles at $250,000 Russian cruise missiles might be justified if those missiles would hit sensitive targets.
Shooting a $4 million missile at a $50,000 Iranian Shahed-136 drone would probably not," they said.