At first it was thought a Russian pilot had mistakenly dropped a devastating FAB glide bomb on his own territory. Then the official voices said something else - the explosion in the village of Belovskoye near Belgorod broke out in an ammunition depot. Whichever version is real, the result is the same: a powerful detonation, wounded people and dozens of damaged houses deep inside Russian land.

According to the authorities in the Belgorod region, five people were injured, and the shockwave shattered the windows of one administrative building, three residential blocks and over 20 private houses. The secondary detonations heard in the footage circulating online support the depot theory - Ukrainian sources estimate it was ammunition for the "Iskander" system or the S-300 air-defence missiles.

Official Belgorod confirmed the casualties and the damage, but wouldn't say what exactly caught fire or whose mistake it was. That silence is telling. When a state is waging a war and one of its own depots suddenly blows up, admitting it was its own - or that it was hit - doesn't come easily.

Whatever happened, the story illustrates an old truth about wars: the front rarely stays where it's drawn on the map. Belgorod is a Russian city, far from the official line of conflict, and yet that evening its residents were sweeping up the same shards of glass as the people on the other side of the border. War doesn't read passports.