On the afternoon of 4 September, a Russian drone struck the building of Ukraine's Security Service in Kyiv, flying straight at the office of the acting chief, Oleksandr Poklad. One source close to the security services was blunt about the mood afterward, telling LIGA.net that everyone was "not just furious — everyone is absolutely livid."

It was a rare direct hit on a top government building — the first time the SBU headquarters had been struck in the four-and-a-half-year war. The central building stands on Volodymyrska Street opposite St. Sophia's Cathedral, a UNESCO World Heritage site.

Poklad was unharmed, and President Volodymyr Zelenskyy said he had ordered a response that mirrors the attack.

Beskrestnov: a planned operation, guided from the ground

Serhii "Flash" Beskrestnov, President Zelenskyy's adviser on defense technologies, argued the strike was too precise to be a stray hit.

"My personal opinion: the Geran was controlled and guided online through a MESH radio relay with internet access, which a Russian agent switched on somewhere nearby — within five kilometers — for a short period during the attack," he wrote.

Such a relay is small, about the size of half a school backpack, he said. He added that no other jet-powered Gerans were in the air over Kyiv at the moment of the strike, which, in his view, rules out the drone being flown along a relay chain reaching back into Russia and points instead to local control.

Europe calls it a major escalation

Katarína Mathernová, head of the EU Delegation to Ukraine, said the drone hit near where she and her colleagues live and work, and her Kyiv staff again had to leave their desks for shelter. Under her post, former EU Ambassador to Ukraine José Manuel Pinto Teixeira called Russia a terror state.

"Time for Ukrainian drones visiting the center of Moscow," he said.

Estonian Foreign Minister Margus Tsahkna said Russian drones had struck "the very heart of Kyiv," and pressed for tighter sanctions and deeper isolation of Moscow.

"The Kremlin’s objective remains unchanged: inflict maximum carnage, sow terror, and trample every norm of international law," he said.