Re: Why Israel didn't ban electronic devices on flights to Tel Aviv?
Why?.... simply because El Al, being the airline of Israel, a country which knows there are a lot of people who want to blow up its citizens, does proper security. Someone (maybe Bruce Schneier) wrote a long article about it.
El Al-style security is time-consuming, expensive and involves highly-trained personnel. That's because it's security that takes security seriously.
Everything else about airline security is just gesturing security-theatre, intended only as a pork-barrel and to simultaneously worry and reassure the proles. Security-_theatre_ in the sense of "local primary school nativity play".