Video: Breaking news! Chaotic scenes after sabotage causes a massive explosion at a Ukraine arms depot. Out of control missiles fly over the city. 20,000 people evacuated!
The base in Balakliya, near Kharkiv, is around 100km (60 miles) from fighting against Russian-backed separatists. The dump is used to store thousands of tonnes of ammunition including missiles and artillery weapons. Rescue teams are overseeing a huge evacuation effort for people living in the city and nearby villages. The total area of the dump spans more than 350 hectares, the military says. Everyone within a 10km (6 miles) radius of the dump is being evacuated.