When it comes to protecting Israel's national security, Mossad does not play nice. The Israeli spy agency, which has a long and bloody history of extrajudicial assassinations under its belt, is suspected of adding another in the slaying of a Hamas researcher on Dec. 15 in Tunisia. From the streets of Europe to the Middle East, Israel's agents time and again have found their mark, with their victims dispatched in novel ways, from bombs placed under the bed to lone figures targeted on dark streets with silenced Beretta .22s. I’ve often wondered if somewhere inside the Mossad there is a secret office that mulls over plots from fiction novels and uses them to plan real-world operations....