How drone warfare has evolved in Ukraine

From tiny quadcopters buzzing over frontline trenches with cameras and grenades to flying bombs lugging warheads weighing dozens of kilograms (pounds) into Kyiv and Moscow, drones have marked the Ukraine war like none before it. In recent months, invading Russian troops have sent waves of Iranian-made Shahed explosive drones at Kyiv and other major cities, while Ukraine has launched unmanned

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