"Terrorism" is inherently a subjective, ideological label, just a vaguely threatening name for the Big Other. A classic in the genre, along with "Red Menace", "Yellow Peril", "Rogue State" etc etc.

The Iranian version of this propaganda technique is the "Great Satan".

They're all just big scary terms to throw around and justify ones deeds.

To the Iranians, the Americans are the terrorists blowing up their bridges. Now what?