Firefighters in the Ukrainian southern port city of Odesa battled a blaze in a private law academy after a Russian attack. The missile strike killed at least four people and injured 32 others after residential buildings and "civil infrastructure" were hit. The law academy was in a Gothic-style building on the seafront and was known as the Harry Potter castle. Drone footage released by the Ukrainian armed forces show the building in flames. On the frontline, Ukrainian officials say Russia is assembling forces for a huge summer offensive, despite its troops making only incremental gains in recent months. The Nato chief, Jens Stoltenberg, says countries have failed to deliver military aid to Ukraine in time, benefiting Russia on the frontline Ukraine war briefing: Russia making gains from slow western aid, says Nato chief Debris from North Korean missile found in Kharkiv, say UN sanctions monitors