In this file photo, a Turkish-made Bayraktar TB2 drone is displayed during a rehearsal of a military parade dedicated to Independence Day in Kyiv, Ukraine, Aug. 20, 2021. The drones, which carry lightweight, laser-guided bombs, carried out unexpectedly successful attacks in the early stages of Ukraine's conflict with Russia. But that edge is rapidly evaporating, researchers and military observers say, as fresh Russian anti-drone systems arriving on the front lines of the bloody slog in the eastern Donbas region are making the unmanned craft far less effective. (AP Photo/Efrem Lukatsky, File) **FILE**
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