Ukraine has installed a citywide electronic warfare network over Kyiv to jam the radio links Russian operators use to steer jet-powered Shahed attack drones, according to the presidential adviser Serhii Flash.Militarnyi, a Ukrainian outlet, reported the project, citing the adviser’s social media post.Electronic warfare means using equipment that blocks or disrupts an enemy’s radio signals. Flash, a radio technology expert, said Russian operators fly some jet-powered Shaheds from Russian territory through a radio modem fitted to the drone. Jamming that signal was the goal of what he called a protective dome over the capital.The job covered hundreds of locations and had to be finished within a few weeks, and it forced Russia to pause and upgrade its Shaheds, Flash said. Those claims come from a single official, and Militarnyi did not publish any independent confirmation.What a MESH network isIn a traditional network, most connections pass through a central point such as a router or a server. If that point fails, the network can go down. A MESH network has no single point like that. Its nodes, meaning the individual devices, link to each other directly or through intermediate devices, and one may connect to the wider internet, according to the Militarnyi report.The network picks routes through dynamic routing, a set of algorithms that choose the most efficient path for data at a given moment. If one route drops out, traffic moves to another. In the Shahed case, the report says, a Russian operator sends commands over radio to a modem on the drone.Flash said in his original post that the tasks were “large-scale and ambitious,” and that antennas and equipment had to go up at hundreds of sites across the city. Militarnyi reported that all major manufacturers of electronic warfare equipment worked around the clock to produce and install it.What remains unconfirmedThe account rests on a single adviser’s social media post. Militarnyi did not report how many jammers were installed or how many drones they have stopped, and no independent measurements were cited. Flash’s claim that Russia paused Shahed drone attacks to upgrade the drones has not been confirmed. Even if there was a pause, it doesn’t mean Russia carried out fewer attacks overall.His own description of Russian upgrades suggests any advantage may be temporary.Jamming is only one layer of drone defense. Ukrainian company F-Drones is developing the F-Jet 80, a jet-powered interceptor drone meant to counter Russian jet-powered strike drones, Militarnyi reported.Russia has sought other solutions, said Flash, but the report does not say what they are or whether they work. It also gives no timeline for further work on the Kyiv system. Whether the jamming keeps working as Russia changes its drones is not yet known.Flash said the General Staff, the Defense Ministry and other agencies took part, along with Armed Forces units. The report included no outside assessment of the electronic warfare system.