A Ukrainian unit said it used heavy bomber drones to air-drop explosive-laden war robots behind Russian lines as part of a secretive operation. Ukraine's Third Army Corps announced on Sunday that Operation Vivaldi, near the eastern city of Lyman, had so far brought 125 square kilometers back under Ukrainian control, including 50 square kilometers retaken from Russian occupation. Many details of the operation remain undisclosed because it is taking place under conditions of maximum information silence, according to Brig. Gen. Andrii Biletskyi, commander of the Third Army Corps. The unit said it pioneered air-deploying ground robots.
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