German authorities have called an explosive drone found near a jet at Leipzig airport a "serious attack" on Germany, according to Sky News.

Reports cited by Sky News say the aircraft involved was Ukrainian and was loaded with ammunition, though German officials have not confirmed it.

The device was found near, not on, the aircraft; authorities have not said whether the jet or its cargo was the target.

Why it matters: an explosive device on German soil, connected to munitions bound for Ukraine, would mark the drone war's first reach onto the territory of a NATO member. That raises the question of how the alliance defines an attack on one of its own, and what response threshold — sanctions, air defence posture, intelligence sharing — it would trigger.

Hypothesis: sabotage against the logistics chain supplying Ukraine, rather than an attempt to strike German infrastructure. Supporting this: the reported presence of ammunition on the specific aircraft targeted, per Sky News. Against this: no attribution has been made public, and the ammunition claim remains unconfirmed by officials.

What to watch: whether German officials name a suspected origin for the drone, whether Berlin or NATO issues any formal response, and whether the ammunition claim is verified or walked back.