Last night, the Russian occupation naval forces conducted exercises to protect the waters of Lake Donuzlav in the temporarily occupied Crimea. Thanks to the Security Service of Ukraine’s drones, these exercises were a failure, RBC-Ukraine’s sources say. According to the sources, the Russians were unable to defend their base, not to mention the lake area. As a result of a combined Security Service of Ukraine’s sea and air drones attack on the Russian Coast Guard base, the following were damaged and disabled: Russian headquarters with the control center;Russian ammunition and equipment depot;Rus…