At night, during the attack, Russia launched 36 missiles at Ukraine, of which only four were shot down, Zelensky said. According to him, this is due to a lack of interceptor missiles for Patriot systems. Ukraine is negotiating with the United States to establish its regular supply. During the inspection of one of the attacked energy facilities, it was discovered that Russia, according to preliminary data, used North Korean KN-23 ballistic missiles, the president emphasized.