A mistake? Doubtful. The IDF knows peacekeepers are patrolling the Lebanese coast.
Revenge for, ahem, “old grievances”? As delicious as that would be, it’s also doubtful. Germany is one of Israel’s best friends in Europe, largely due to guilt over those old grievances. No sense alienating the few allies it has.
A warning to UN forces — specifically, certain other European powers — that they shouldn’t threaten Israeli aircraft? Perhaps.
DU has already picked this story up and the thread is growing increasingly fragrant. Keep an eye out.
Update: Israeli Defense Minister Amir Peretz is unhappy.