Based on images published on social media on Thursday, 12 Shahrivar, a large explosion occurred near the port of Sochi in the south-west of Russia, and these images show moments after an attack by Ukraine. On Wednesday, 11 Shahrivar, Ukraine announced that it had formally informed the International Civil Aviation Organization (ICAO) that Russian airspace is “not safe.” The announcement was made following an increase in Ukraine’s drone attacks on Russian territory.