THIS is the dramatic moment Ukrainian drones destroy two Russian bridges used by troops as a key supply route.

The crossings in the Belgorood region were obliterated when two "cheap" drones struck a stash of Vlad's mines hidden beneath them.

Video shows the device locking in its target before descending on the bridge.

As a whole stretch of the deck explodes, flames and clouds of thick smoke balloon into the air.

Surrounding trees and forest land are blown up in its path.

Ukraine’s 58th Separate Motorized Infantry Brigade, which conducted the operation told CNN they had taken a closer look at the bridge after "it became clear that something was going on there".

When they sent a drone to the area, they discovered a huge pile of anti-tank mines and other ammunition.

The bridges wer

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