Paranoia..............
Isn't this what Terrorism is all about? Generating extreme paranoia within the other party in "the feud"?
Terrorism is also so unpredictable. Unlike armed forces massing prior to action, where the intent and potential schedule is apparent.
It must seem to lots of folk the technique is having a huge impact by rattling many if someone with an upset stomach and an olive skin is considered a security risk. Or, opening overhead luggage bins, looking for your carry-on baggage..........?