Russian Underwater Surveillance Network Supported by Cypriot Company
October 25, 2025
Russia is reportedly constructing an underwater surveillance network in the Arctic to spy on NATO, utilizing technology obtained through a Cypriot company. Mostrello Commercial Ltd., registered in Limassol, has been included in US sanctions lists. The investigation reveals that Mostrello supplied Western components used in this network, known as 'Harmony.' This system is designed to protect Russian submarines while competing with US and NATO naval dominance. Documents indicate that the company worked with over 50 suppliers, mainly from Europe, to acquire sensitive materials.