The Wayback Machine reminds us of all past tense showing us the future. The base in Balakliya, near Kharkiv, is around 100km (60 miles) from fighting against Russian-backed separatists in the eastern oblasts (2017).

2017: “The Ukrainian SBU – the equivalent of the FBI – now believe that the destruction of a giant arms depot at Balakliya in eastern Ukraine in March was carried out by a small drone. The spectacular explosion and fire destroyed some seventy thousand tons of munitions with damage estimated at a billion dollars, though only one person was killed. This destruction is a graphic illustration of the threat posed by small drones, as many other high-value targets may be equally vulnerable. Balakliya was said to be the largest ammunition dump in the world.”

https://web.archive.org/web/20170801064637/http://scout.com/military/warrior/Article/Small-Russian-Drones-Do-Massive-Damage-WIth-Grenade-Weapons-103103172