I don't know much about this, but I was just reading about him in wiki.
So, let me get this straight. They arrested him in 1979, and 30 years later, they release him as part of a prisoner exchange deal with Hezbollah, and then a few years later assassinate him? Seems like the sort of thing one country does so that no other prisoner exchange deals happen in the future.
By the way, this is an interesting part in wiki,
Not everyone in Israel was convinced of al-Kuntar’s guilt. Psychologist and former senior police officer Zvi Sela denied that al-Kuntar had killed the Haran family. Between 1995 and 1998 he served as Chief Intelligence Officer of the Israel Prison Service and met al-Kuntar in prison in this capacity. In an interview with Haaretz he claimed:
"We turned Kuntar into God-knows-what – the murderer of Danny Haran and his daughter, Einat. The man who smashed in the girl's head. That's nonsense. A story. A fairy tale. He told me he didn't do it and I believe him. I investigated the event… and in my opinion there is support for the fact that they were killed by fire from the Israeli rescue forces. You can accuse him all you like, but it was obviously the rescue forces that opened fire."[22]
I am ignorant about the guy, but can you give me a source on your information? As far as I could figure out from wikipedia, he was a Druze who was part of the PLO. Why would a PLO Druze hate the name Aisha?