i'm actually pretty surprised this doesn't happen more often.
not that it's justified. harassing random citizens in another country, even a country hostile to your own, really doesn't accomplish anything. but given how easy it is to telephone across borders, you'd think the temptation would be irresistible among the most hotheaded citizens of any country in a conflict. so why is this the first time i've ever read about cross-border cranks?
maybe it's only happening now because international calling is getting to be so cheap? i bet israelis from the far north can get onto the lebanese cell phone network and make it a local call. (it would have worked from syria)
