Air raid sirens sounded in multiple Ukrainian regions Sunday evening as aerial reconnaissance detected several swarms of so-called kamikaze drones launched by the Russian military, Ukrainian media reported. The air alert applied to the Kharkiv, Poltava, Sumy and Dnipro regions in the east of the country. No further details were initially available. Earlier, the Ukrainian military had carried out drone attacks in the south of Russia. In Krasnodar, a drone attack triggered a fire at an oil refinery. According to the Ministry of Defence in Moscow, at least eight drones were shot down over the sou…