Ukraine's strategy of launching large drone swarms can overwhelm Russian air defense systems not designed for such attacks.

Videos from Moscow show Russian soldiers firing shoulder-mounted air defenses from a busy highway as Ukrainian drones descend on the capital.

Experts say the drones are difficult to track and Russia's air defenses are not fit for purpose.

AI-generated summary was reviewed by a CNN editor.

As a barrage of Ukrainian drones descended on Moscow in the early hours of Thursday, Russia’s response appeared more like a scramble, and less like a well-planned strategic defense. Videos from the streets of the capital showed glimpses of the ensuing chaos.