In 2011 and 2012 5 Iranian nuclear scientists were murdered. While Israel was suspected and one "spy" was executed for killing one scientist there were rumors that the Iranians themselves were responsible for the murders. To prevent Iran from acquiring a nuclear weapon Israel can, to stall the Iranians, assassinate their nuclear scientists. http://www.jpost.com/Middle-East/Ir...f-Iran-nuclear-scientists-Yaalon-hints-411473 In an interview with the German-language Der Spiegel, Moshe Ya'alon said that he bore no responsibility "for the life expectancy of Iranian scientists . . . ultimately it is very clear, one way or another, Iran’s military nuclear program must be stopped we will act in any way and are not willing to tolerate a nuclear-armed Iran. The end justifies the means?